MITT ROMNEY has attacked the US President, Barack Obama, for ''refusing to recognise Jerusalem'' as the capital of Israel - an incendiary position counter to US policy - in a TV advertisement.

The new commercial, featuring clips from the Republican presidential hopeful's recent trip to Israel, attacks Mr Obama for not visiting since taking office.

''Mitt Romney will be a different kind of president. A strong leader, who stands by our allies,'' the narrator says.

The former Massachusetts governor underscored his attack on Twitter. ''In almost 4 years as president, @BarackObama hasn't visited Israel. We need a leader who stands with our allies,'' he wrote, attaching a link to the ad.