As  world leaders denounced Russia's aggression against Ukraine, 
President  Donald Trump waited more than a day before offering a muted 
response  about the clash, leaving the task of criticizing Moscow to the
 outgoing  US ambassador to the UN.
When  asked how he felt about the clash, Trump said, "not good. Not 
happy  about it at all." He seemed reluctant to blame Russia, adding, 
"we do  not like what's happening either way. And hopefully it will get 
 straightened out.
Trump spoke to reporters just days before he is expected to meet with President Vladimir Putin at a G20 meeting in Argentina.
In  the 24 hours after Russian ships opened fire on and seized three  
Ukrainian vessels near Crimea, German Chancellor Angela Merkel, a  
spokesman for British Prime Minister Theresa May, the foreign ministers 
 of Germany, the UK and Canada,
European members of the Security Council,  including France, Sweden, 
Poland, the Netherlands and the UK, as well  as several US lawmakers 
expressed grave concern and called for a  de-escalation.
During  that time, the President and Secretary of State Mike Pompeo 
remained  silent on the serious escalation in tensions between the two 
countries.  After Trump spoke to reporters, a day and a half after the  
confrontation, Pompeo released a statement expressing "deep concern,"  
condemning Russia and calling for restraint from "both parties.
But  it fell to Ambassador Nikki Haley to reprise her role as the  
administration's leading and toughest voice on Russia, leaving analysts 
 concerned that the White House silence and then Trump's low-key 
response  would be read as encouragement, if not acquiescence.
Read more: Ukraine Russia: Trump refuses to condemn Russian aggression - CNNPolitics