Officials asked to update 20-year-old contingency plans that would put UK on war footing after Kremlin threats

A Patriot air-defense system is moving from Israel to Ukraine, and Western allies are discussing the logistics of getting Germany or Greece to send another.

"There will be an increased pressure on pan-European projects, that is for sure," former Lithuanian foreign minister, Gabrielius Landsbergis, told Newsweek.

The U.S. State Department has approved the potential sale of F-16 training and sustainment, along with related equipment, to Ukraine for $310 million, the Pentagon said on Friday.