US President Donald Trump has said he believes North Korea wants to "make peace," as he praised the nation for its restraint after announcing a possible meeting between him and leader, Kim Jong Un.

"I think they want to make peace. I think it's time," Mr Trump told a crowd of supporters at a rally in Pennsylvania, adding that he believed Pyongyang when they said "they are not sending missiles up" as the two sides work out the arrangements for a historic meeting. 

"And I think we've shown great strength. I think that's also important," Mr Trump added.

President Trump also said he hopes there will be no further North Korean missile tests during contacts with US officials. He welcomed the fact that there has not been a test carried out since last November.

Earlier, Mr Trump said he will spare the European Union from his steel and aluminium tariffs if the EU ends its own trade barriers to US products.  

The duties of 25% on imported steel and 10%t on aluminium have caused concern in the EU, and with the US's other major partners, including Japan.  

In a Tweet, Mr Trump said: "If they drop their horrific barriers & tariffs on U.S. products going in, we will likewise drop ours."