President trupPresident Trump: Seven ways the world has changed 25 April 2017 From the section US & Canada comments These are external links and will open in a new windowShare Image copyrightAFP With Donald Trump in the White House, the US's relationship with the rest of the world has changed in some important ways. Here are seven of them. Heightened nuclear tensions in Asia Image copyrightAFP Image caption Donald Trump still has to decide how to handle this man - Kim Jong-un A Donald Trump presidency has raised major security questions in Asia. Not only did he shock China with comments on Taiwan before his inauguration, but his Secretary of State Rex Tillerson has spoken of blocking China's access to artificial islands it has been building in the South China Sea, prompting warnings of a "military clash" from a state-run newspaper. Japan and South Korea have both been singled out by Mr Trump for relying too much on the US. He has even said they would benefit from having their own nuclear arsenals. Then there is the region's renegade state, North Korea, which is currently developing its own nuclear weapons. Mr Trump faces the task of curbing those ambitions, something that has eluded successive US leaders. Under President Obama, the policy was called "strategic patience" - squeeze North Korea with sanctions, persuade others to do the same, particularly China, and wait it out. But Mr Trump's Vice-President Mike Pence has now said the "era of strategic patience is over". The administration says "all options are on the table" and Mr Trump's announcement that he was sending an "armada" of US warships towards the Korean peninsula raised the spectre of military action. The move was met with defiance from North Korea's regime, which threatened "weekly" missile tests and warned of "all-out war". But there was increased confusion just 10 days later when it emerged that the US Navy strike group, which Mr Trump said had been deployed towards the Korean peninsula, instead travelled in the opposition direction. While the White House clarified the whereabouts of the ships and insisted they were on their way, Mr Trump returned his focus to pressuring China to take action. "China is very much the economic lifeline to North Korea so, while nothing is easy, if they want to solve the North Korean problem, they will," he tweeted. His next step is unknown, but the early attempts of this unpredictable president in tackling the world's most unpredictable state have already exposed a flashpoint that is likely to return in years to come. Relationship with Russia even more complicated Image copyrightAP Image caption Russian President Vladimir Putin has praised the incoming US president and the feeling is mutual During the US election campaign, Mr Trump praised Russian President Vladimir Putin as a strong leader, with whom he would love to have a good relationship. That was before US intelligence agencies determined Russia was responsible for hacking Democratic Party emails during the campaign - a conclusion that Mr Trump eventually conceded he agreed with. The explosive publication of an unverified dossier alleging that Russia holds compromising material on Mr Trump has also raised prickly questions for him. He has batted them away, dismissing the allegations as "fake news". But concerns over his administration's ties with Russia continue to dog his presidency, with his national security adviser Michael Flynn abruptly resigning over conversations with Russia's ambassador in the weeks before inauguration. Mr Trump said he wanted to start off trusting President Putin but warned "it might not last long at all". And it seems it didn't. The relationship appeared to take a sharp downward turn following a chemical attack in Syria, which was blamed on the Syrian government, and Russia's continued support for President Bashar al-Assad. President Trump went on to say the US "may be at an all-time low in terms with our relationship with Russia". He said it would be a "fantastic thing" if the nations improved ties, but warned "it might be just the opposite".