President Donald Trump's highly anticipated one-on-one summit with Russian President Vladimir Putin marks his latest effort at securing a peace deal over Ukraine, a priority in his second term. The meeting comes after a string of deals and agreements the White House said Trump has helped broker globally that should earn him something the president has long desired -- a Nobel Peace Prize.

Investors are tempering expectations that Friday's summit between U.S. PresidentDonald Trump and Russia'sVladimir Putin will deliver a significant breakthrough on the war in Ukraine despite some hopeful signs.