US President Donald Trump has said, the US-led international sanctions and other pressures are beginning to have a big impact on the authoritarian North Korean regime.<br/><br/>South Korea on Tuesday proposed holding high-level talks with Pyongyang after the North Korean leader Kim Jong-Un, during his annual New Year address, called for a breakthrough in relations and said Pyongyang might attend the 2018 Winter Olympics to be held in the South Korean city of Pyeongchang.<br/><br/>In a tweet on Tuesday, Mr Trump said, sanctions and other pressures are beginning to have a big impact on North Korea as the Rocket man now wants to talk to South Korea for the first time. <br/><br/>Mr Trump in November declared North Korea a state sponsor of terrorism, a move that allows the US administration to impose additional sanctions on Pyongyang over its nuclear and missile programmes.