Donald Trump speaks to acting president of South Korea after Syria missile strike described by North as intolerable act of aggression

The US navy is moving forward a strike group towards the western Pacific Ocean to provide a presence near the Korean peninsula, a US official said on Saturday.

The Carl Vinson strike group, which includes an aircraft carrier, will make its route from Singapore, according to the official, who spoke to Reuters on condition of anonymity.

The news followed a Friday report by NBC that the National Security Council had included the return of nuclear weapons to South Korea in alternatives presented to Donald Trump for dealing with the threat were imposed by North Korea. Killing North Koreas president, Kim Jong-un, was also presented as an option, NBC reported.

On Saturday the White House said the US president had spoken to the acting chairman of South Korea, Hwang Kyo-Ahn. North Korea, meanwhile, called the US missile strike on Syria on Thursday evening an unbearable act of aggression.

Rising tensions between North Korea, South Korea and the US and the Norths nuclear ambitions were chief among themes discussed by Trump and Chinese chairman Xi Jinping at Mar-a-Lago in Florida this week.

The White House said on Saturday Trump spoke with Hwang about the strike in Syria, put in place in retaliation for a suspected substance attack on civilians by Bashar al-Assads government.

The two leaders agreed to stay in close contact, the White House mentioned, regarding North Korea and other issues of mutual concern.

Read more: https :// www.theguardian.com/ world/ 2017/ apr/ 09/ us-navy-strike-group-north-korea-peninsula-syria-missile-strike