A Trump supporter holds a copy of a book before the start of an address by US Republican presidential hopeful Donald Trump in North Charleston (Reuters photo)

Republican presidential hopeful Donald Trump isn’t known for pulling any punches — even when it comes to international diplomacy, it appears.On an American radio show on Monday, Trump called Pakistan “probably the most dangerous” country in the world today, adding that the only country that can “check” Pakistan is India.Pakistan is “a serious problem” because they have nuclear weapons that work and “a lot of them”, just like North Korea and its “mad man”, Trump explained.It wasn’t enough that he clubbed Pakistan with North Korea. “India is the check to Pakistan,” continued Trump, adding insult to Pakistan’s injury. “You have to get India involved … They have their own nukes and have a very powerful army. They seem to be the real check ... I think we have to deal very closely with India to deal with it (Pakistan),” said Trump, about his foreign policy goals.Trump has been criticized by some for lacking depth or being ignorant about national and international issues. When he didn't answer a question about whether he would send troops to Pakistan to take their nukes he quickly defended himself. "This is nothing to do with lack of knowledge, by the way, I know as much about Pakistan as other people," he said. The real reason he wouldn't answer, he said, is because he doesn't want people to know his intentions. "You want to have a little bit of guess work for the enemy."Alongside Pakistan, North Korea’s Kim Jong-un also came in for special mention by Trump. “You have a mad man over in North Korea who actually has nukes and says he’s going to use them; he pops up every two weeks and he says he’s going to use them,” Trump said.