President Vladimir Putin intends to keep fighting in Ukraine until the West engages on his terms for peace, unfazed by Donald Trump's threats of tougher sanctions, and his territorial demands may widen as Russian forces advance,

President Donald Trump has long worked to bring peace to Ukraine, but his recent major policy adjustments in response to Russian President Vladimir Putin’s reticence toward peace could finally present Trump’s chance to make a deal,

Putin will not change his behaviour until he is forced to do so by action that hurts Russia, militarily or economically, experts have said