After clinging for more than seven months to a gradually shrinking area, Ukraine has seen its position worsen sharply in the past week.

Kyiv has called on Moscow to respond to the proposed ceasefire - the Kremlin says it is waiting to be briefed by the US.

As momentum builds for a ceasefire with Russia , Ukraine has all but lost a valuable bargaining chip. The Ukrainian army stunned Russia in August by attacking across the border and taking control of an estimated 1,