President Donald Trump's meeting with Russian leader Vladimir Putin is set for a military base in Alaska that was crucial to countering the Soviet Union during the height of Cold War and still plays a role today.

Ukrainian President Zelenskyy says Russia is showing "no sign" of preparing to end the war as Trump and Putin prepare to meet in Alaska on Friday.

US President Donald Trump has said that if his meeting with Russian leader Vladimir Putin in Alaska is successful, he will arrange a second meeting that Ukrainian President Volodymyr Zelenskyy will be invited to attend.