Ukraine's former president calls Putin modern-day Hitler
Poroshenko, who was in office from 2014-19, also said "today is a tragic day" but that Ukraine will prevail
Ukraine's former president and current lawmaker Petro Poroshenko has compared Russian President Vladimir Putin to a modern-day Hitler.
He was speaking outside parliament as MPs hold crisis talks in Kyiv, reports the BBC.
Poroshenko, who was in office from 2014-19, also said "today is a tragic day" but that Ukraine will prevail.