At what was billed as an “historic” presidential summit, hastily put together in Alaska on Friday afternoon, the optics were as clear and overshadowing as the vast Chugach mountains glistening over Anchorage in the summer sun.

It is quite possible that Monday's meeting in the White House could prove even more crucial to the future of Ukraine - and for all of Europe's security - than last Friday's US-Russia summit in Alaska. On the surface, that Putin-Trump reunion seemed to live down to every expectation. There was no ceasefire, no sanctions, no grand announcements.

The Ukrainian president and several European leaders will meet with the US president Monday to discuss peace negotiations with Russia