Several administration officials said earlier Tuesday that Obama's letter suggested that Russia could have a role in reducing Iran's nuclear threat, and therefore could dissuade the United States from going forward with its plans to establish a missile base in Poland and a radar facility in the Czech Republic.
CNN: Obama downplays letter to Russia regarding nuclear Iran
But what Poland wants, especially if the missile-defence base is cancelled, is practical preparations, such as regular manoeuvres, and fuel and ammunition stockpiles.
ECONOMIST: The Atlantic alliance is waning in Europe��s east
Mr Sikorski has also been playing high-stakes poker with America, demanding money for military modernisation, and high-tech defences for Warsaw, in return for hosting a missile-defence base.
This examines what would happen if an independent Scotland insisted on the immediate removal of the Trident nuclear missile submarines from their base on the Clyde.
The most deadly attack on American forces in the Gulf war occurred when a Scud missile fell on a supply base in Dhahran, Saudi Arabia.
Such a missile is being developed at Kirtland Air Force Base in New Mexico, and will soon be tested at the White Sands Missile Range.
The explosion occurred as about 400 U.S. military personnel are moving Patriot missile defense equipment to a Turkish base as part of an effort to defend the country from possible attack from Syria.
By contrast, the Bush Administration has formulated a Nuclear Posture Review (NPR) that envisions maintaining the effectiveness of the U.S. nuclear stockpile by retiring older weapons and modernization, restoring the critically important nuclear industrial base and introducing anti-missile and other defenses against nuclear attack.
The land-based anti-missile rocket is to be launched from Kwajalein Atoll in the Pacific in hopes of destroying a modified Minuteman missile fired into space 20 minutes earlier from Vandenberg Air Force Base, 4, 300 miles (6, 880 kms) away in California.
CNN: US - Critics blast U.S. anti-missile system on eve of key test
The Trident missile system, Britain's nuclear deterrent, is carried by submarines based at the Faslane naval base on the Clyde, near Helensburgh.
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