WASHINGTON (Reuters) - U.S. President Donald Trump spoke to South Korean President Moon Jae-In on Thursday for the second time since North Korea launched its latest missile to discuss their response, the White House said.  The presidents reiterated their strong commitment to enhancing the alliance s deterrence and defense capabilities,  it said in a statement.  Both leaders reaffirmed their strong commitment to compelling North Korea to return to the path of denuclearization at any cost.   