Donald Trump is facing criticism from his rivals for the Republican presidential nomination after congratulating North Korean leader Kim Jong-un on his country being admitted to the World Health Organisation’s Executive Board. Reacting at a campaign appearance in Iowa, Florida governor Ron DeSantis said: “I was surprised to see that. I mean, one, Kim Jong-un is a murderous dictator.” Nikki Haley, Mr Trump’s former ambassador to the UN, responded equally strongly during a CNN town hall event, remarking: “Kim Jong-un is a thug. I don’t think we should congratulate dictators.” The former South Carolina governor, the only woman in the race, also took her competitors to task over their comments on Russia’s invasion of Ukraine, saying: “For them to sit there and say that this is a territorial dispute – that’s just not the case, or to say that we should stay neutral. “It’s in the best interest of our national security for Ukraine to win.” Mr Trump continues to dominate the field among potential Republican primary voters with 49 per cent of support, according to the latest Reuters/Ipsos opinion poll. Mr DeSantis is next with 19 per cent and Ms Haley way behind on 4 per cent. Read More Trump makes misleading claim that New York hush money case could be dropped DeSantis defines ‘woke’ after Trump claimed ‘half the people can’t’ DeSantis condemns Trump for congratulating ‘murderous dictator’ Kim Jong-un Marjorie Taylor Greene U-turns on release of Jan 6 tapes - saying she’s worried about Capitol security