Pence, however, justified the attack by merely stating that the USA did not act alone, claiming that other leaders at the Latin American summit had both publicly and privately expressed support for the Syria bombardment.
VP Pence called the U.S. led airstrikes on Syria a success.
Vice President Mike Pence on Saturday called USA led airstrikes on Syria a completely accomplished mission while in Peru to renegotiate the NAFTA trade pact. The Mexican leader said they will discuss NAFTA and other parts of their relationship involving "cooperation and mutual respect".
The decades-old trilateral trade agreement has been a frequent target of President Trump, who has criticized large trade deficits the US has with Mexico and Canada, as well as the relocation of American jobs and companies.
There had been expectations leading up to the meeting that NAFTA would dominate the discussion, particularly after conflicting messages from USA trade officials and President Donald Trump earlier in the week.More news: White House Explains Trump's Reversal on TPP
But US relations with Mexico had soured in recent weeks as US President Donald Trump has sought to link the trade talks to Mexican efforts to stop migrants illegally crossing the border into the US, and ordered National Guard troops to the border.
'I think President Pena Nieto understands that he and President Trump have a difference of opinion on that, ' he said.
Pence said the two countries were close to reaching agreements on issues such as immigration, combating drugs and NAFTA.
NDP leader Jagmeet Singh issued a statement Saturday saying "escalating violence through further military action is not the way to bring peace and stability to Syria and the surrounding region", and calling for more funds to investigate atrocities in Syria.
After the meeting with Pence, Canada's leader Justin Trudeau said the "positive momentum" included the thorny issue of United States demands around automobile production.
Pence left the summit late Friday so he could confer with US congressional leaders by telephone from his hotel suite about Trump's plans to announce the missile strikes.