Strengthening the offensive capability of nuclear weapons is the nub of China's strategic deterrence
It is far from enough for China to rely on ground-based anti-missile technologies to deter the US. China also needs to further strengthen its offensive capability of nuclear weapons, which is the nub of China's strategic deterrence.
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China-US nuclear rivalry and the discovery of China’s missile silos
An air-defense missile system attached to a brigade under the PLA 71st Group Army launches an air-defense missile at a mock target during a field live-fire training exercise in late February, 2022. (eng.chinamil.com.cn/Photo by Xue Weigao)
China on Sunday successfully conducted an antiballistic missile test in a move experts said on Monday is a crucial part of the country's national defense development that is defensive in nature, demonstrating the reliability of China's antiballistic missile umbrella amid US attempts to blackmail China with modern, nuclear-armed intercontinental ballistic missiles and deploying intermediate-range ballistic missiles in the Asia-Pacific region on the doorsteps of China.
China conducted a land-based, mid-course antiballistic missile interception technical test within its borders, China's Ministry of National Defense announced in a press release late on Sunday.
The test reached its desired objective, the press release said, noting that the test is defensive in nature and not aimed at any other country.
A similar test was held in February 2021, according to an announcement of the Chinese Defense Ministry at the time.
The flight of an intercontinental ballistic missile usually consists of three phases. First is the boost phase in which the rocket booster powers the missile. Second, the mid-course phase in which the booster stops as the missile travels outside the atmosphere. Third and last, the reentry or terminal phase in which the missile reenters the atmosphere and dives on its target.
Intercepting an intercontinental ballistic missile during its mid-course is very challenging because during this phase, the missile, usually equipped with nuclear warheads, travels high outside of the atmosphere at very high velocity, experts said.
It is technically easy to intercept a ballistic missile in the boost phase because the missile is still close to the ground and accelerating, but it is difficult to get close to the launch site which is usually deep in hostile territory. In the terminal phase, the interception is also challenging because the speed of the diving missile is very high, analysts noted.
Countries are developing hypersonic missiles with wave-rider gliders that can adjust their trajectories mid-flight when they reenter the atmosphere, which makes terminal interception even more difficult, and mid-course interception has become even more important, analysts said.
A mid-course antiballistic missile system consists of two parts - a booster and an interceptor as its warhead, and moves to intercept the ballistic missile in the second phase of its flight where it is traveling outside the atmosphere, an expert familiar with the technology told the Global Times on the condition of anonymity.
One of the key challenges for a mid-course antiballistic missile system is the miniaturization of the warhead, making it light enough without compromising its flight precision as well as sensitivity, the expert said, adding that it is preferred to use a rapid combustion rocket as the booster for the system so that it can send the antiballistic missile to the atmosphere as fast as possible.
Although small in size, the mid-course antiballistic missile has a complete set of combat systems, including power, tracking, target-identifying systems and the killer part, the expert explained.
The mid-course antiballistic missile interception also has a network of support systems with an early warning and monitoring function. The centerpiece of the warning and monitoring systems is the missile early warning satellite, and support from long-range monitoring radars and a highly efficient and rapid command system are also playing crucial roles in the interception process, the expert said.
The latest test brings the number of publicly announced Chinese land-based ABM technical tests to six. According to media reports and official statements, other known ABM tests were carried out by China in 2010, 2013, 2014, 2018 and 2021. It was not revealed in which interception phase the test in 2014 was carried out, while all other five were carried out in the mid-course phase. All of those Chinese tests ended successfully.
By comparison, the US Ground-based Midcourse Defense system only has a success rate of just 55 percent, according to the Washington DC-based Center for Arms Control and Non-Proliferation.
The high success rate of China's tests shows that the country's land-based mid-course antiballistic missile system has become mature and reliable, Wang Ya'nan, chief editor of Beijing-based Aerospace Knowledge magazine, told the Global Times on Monday.
For the next step, China needs to conduct tests under more complex scenarios to further hone its antiballistic missile capabilities, Wang said, noting that the US' lower success rate does not necessarily mean China has surpassed the US, because the US tests might involve different and more challenging simulation parameters.
US threats
Despite China's latest test does not target another country, analysts said that the US is the biggest source of ballistic missile threats to China.
The US Department of Defense is modernizing its intercontinental ballistic missile force with the $100 billion Ground Based Strategic Deterrent program in an attempt to deter China and Russia, US media outlet Defense News reported in April, when the US Air Force named its next-generation intercontinental ballistic missile the LGM-35A Sentinel, which is to succeed the 5-decade-old Minuteman III beginning 2029.
Having a reliable antiballistic missile system serves as a deterrent against US nuclear blackmail, experts said.
After withdrawing from the Intermediate-Range Nuclear Forces Treaty in 2019, the US began planning an anti-China missile network along the first island chain, media reported.
Fears are that the US could deploy intermediate range missiles in places like Japan, South Korea, Guam and Australia, despite Japan, South Korea and Australia ruling out this US proposal for the time being, according to media reports. As the Western missile network is pressing in on the Asia-Pacific region, China needs to develop antiballistic missile systems as well as far-reaching weapons like aircraft carriers and hypersonic missiles to defend itself, analysts said.
If the US succeeds in deploying intermediate range missiles near China, it means China will face not only more missile threats, but also more uncertainties. If US missiles are deployed in multiple locations along the island chains, it would be more difficult to predict from where those missiles could come from, Wang said.
That is why China needs both spear and shield, Wang pointed out.
When needed, China should be able to use its long-range strike capabilities and destroy those missile positions, and use missile defense systems to intercept those that have made into the air, Wang said.
China just launched its third aircraft carrier, the Fujian, on Friday, and showcased its DF-17 hypersonic missiles at the National Day military parade in 2019. If US missiles are deployed on China's doorsteps, they are likely targets of those Chinese weapons if they aim at China, analysts said.
China already has a military advantage over the US on the doorsteps of China, and further national defense development is needed to deter the US and lower casualties in case of a conflict, analysts said.
China follows a national defense strategy that is defensive in nature, so both the spears and the shields it develops are aimed at safeguarding its national sovereignty, territorial integrity and development interests, as well as contribute to regional stability and world peace, analysts said, noting that this is totally different from the US' aggressive military development that aims to maintain global hegemony.
