Denmark, France and Germany have joined a new mission to bolster the military alliance's eastern flank after Russian drones flew into Poland on Wednesday.

Article 5 is an alliance-bound agreement between NATO nations in the case of an attack, as tensions between Russia and Poland increase.

U.S. President Donald Trump on Friday said his patience with Russian President Vladimir Putin was running out, but stopped short of threatening new sanctions over the Ukraine war. Asked if his patience with Putin had run out,

The war in Ukraine could reach 'crisis point' within weeks and further derail the peace talks, an expert has warned