Donald Trump's inauguration as US President was greeted with notes of caution by some foreign leaders.
Mr Trump was sworn in as the 45th President of the United States on Capitol Hill in Washington DC. During his inauguration speech, he said that his presidency would aim to help struggling middle-class families, build up the US military and strengthen US borders.
He said: "From this day forward a new vision will govern our land. From this day forward it's going to be only America first."
Mexican President Enrique Pena Nieto congratulated Mr Trump, saying he would like to strengthen ties, but that sovereignty, national interest and protection of Mexicans would be paramount.
Mr Pena Nieto, criticised for meeting the US President last year even after he had insulted Mexicans in his election campaign, said on Twitter he would seek "respectful" dialogue with the new US government.
Canada's government, eager to sidestep potentially protectionist US policies, said it was confident that Mr Trump would see that working closely with Canada benefited both nations.
"We are confident the new Administration will see that Canada's partnership with the US mutually strengthens our two nations and provides real opportunities to grow our respective economies," a spokesman for the country’s Foreign Minister said in a statement.
Germany will need a new economic strategy geared toward Asia should the new US administration start a trade war with China, Vice Chancellor Sigmar Gabriel said, warning against protectionism hours after Mr Trump was sworn in.
"What we heard today were high nationalistic tones," Mr Gabriel said in an interview with the public broadcaster ZDF, the first official German reaction to Mr Trump's inauguration. "I think we have to prepare for a rough ride."
Pope Francis urged the new US President to be guided by ethical values, saying he must take care of the poor and the outcast during his time in office.
Palestinian President Mahmoud Abbas, in a statement posted in his name on the official Palestinian news agency WAFA, congratulated Mr Trump.
He added, "I look forward to working with him for the sake of peace, security and stability in a world that is troubled and in a region that lives a tragic era, and to contribute to creating a safe future for everyone."
Anders Fogh Rasmussen, former NATO chief and now an adviser to Ukrainian President Petro Poroshenko, said in a telephone interview with Reuters that, "I had hoped and also expected a more internationally oriented speech. Instead we got a very domestically oriented, anti-establishment speech.
"As president of the United States, he should also realise he has become the leader of the free world - that's why people all over the globe are watching his inauguration speech. And that's why I had hoped that he would also address the need for determined American global leadership."
Meanwhile, the leader of Taiwan President Tsai Ing-wen sent a congratulations tweet to Mr Trump, saying "Democracy is what ties Taiwan and the US together."
Congratulations @realDonaldTrump. Democracy is what ties Taiwan and the US together. Look forward to advancing our friendship & partnership.
— 蔡英文 Tsai Ing-wen (@iingwen) January 20, 2017
Mr Trump had sparked a diplomatic row with China when he breached protocol by accepting a phone call from Ms Tsai.
