Russia's nuclear rules say it can use atomic weapons if the country — or one of its allies — is attacked, especially if the attacker is a non-nuclear nation backed by a nuclear power. That clause could be seen as applying to Ukraine,

President Donald Trump has finally found a way to like arming Ukraine: ask European allies to donate their weapons, and sell them American replacements.

United States military and NATO officials are discussing a possible plan that could be unveiled in the coming days that would provide Ukraine with much-needed aerial defense weapons, including Patriot systems,