Hans M. Kristensen

Articles by Hans M. Kristensen

1 September 2015
Nuclear notebook

With several long-range ballistic missiles in development, the Indian nuclear posture is entering an important new phase. After nearly two decades of focusing on nuclear competition with Pakistan, New Delhi seems to now be paying attention to its future strategic relationship with China.

1 July 2015
Nuclear notebook

China is the only one of the five original nuclear weapon states that is quantitatively increasing the size of its nuclear arsenal and it now is estimated to have approximately 260 warheads. The arsenal’s capabilities are also increasing as older missiles are replaced with newer ones.

1 May 2015
Nuclear notebook

Russia is modernizing its strategic and nonstrategic nuclear warheads. It currently has 4,500 nuclear warheads, of which roughly 1,780 strategic warheads are deployed on missiles and at bomber bases. Another 700 strategic warheads are in storage along with roughly 2,000 nonstrategic warheads.

1 March 2015
Nuclear notebook

As of early 2015, the authors estimate that the US Defense Department maintains about 4,760 nuclear warheads. Of this number, they estimate that approximately 2,080 warheads are deployed while 2,680 warheads are in storage.

1 January 2015
Nuclear notebook

Over 28 years of weapons analysis, the Nuclear Notebook column has revealed surprise nuclear activity and spot-on arsenal estimates while becoming a daily resource for scholars, activists, and journalists.

1 November 2014
Middle East
Nuclear notebook

Although the Israeli government neither confirms nor denies that it possesses nuclear weapons, it is generally accepted by friend and foe alike that Israel is a nuclear-armed state—and has been so for nearly half a century.

3 September 2014

Why NATO should eliminate its tactical nukes, despite Russian belligerence

Hans M. KristensenAdam Mount

US tactical nuclear bombs don't deter Putin and detract from more useful defense initiatives

1 September 2014
Nuclear notebook

As of mid-2014, the authors estimate that there are approximately 16,300 nuclear weapons located at some 98 sites in 14 countries. Roughly 10,000 of these weapons are in military arsenals; the remaining weapons are retired and awaiting dismantlement.

1 July 2014
Nuclear notebook

The nuclear-armed states have large residual nuclear arsenals, and post-Cold War reductions of nuclear weapons have slowed. Meanwhile, the nuclear nations have undertaken ambitious nuclear weapon modernization programs that threaten to prolong the nuclear era indefinitely.

1 May 2014
Nuclear notebook

The Obama administration has approved an upgrade to the B61 nuclear bomb that will, through use of a new tail kit assembly, become a guided standoff nuclear bomb.