Shortly after his inauguration, US President Donald Trump signed a slew of executive orders in front of his supporters. With some 80 orders, he rescinded many measures introduced by his predecessor Joe Biden and announced more to come. Among other things, he plans to fire numerous government employees, seal off the border with Mexico and pardon the Capitol attackers. Commentators see major repercussions.

Elon Musk, billionaire and close confidant of US President Donald Trump, has caused a stir by making a gesture that closely resembles the Nazi salute. Speaking to supporters at the Capitol One Arena in Washington after Trump's swearing-in ceremony on Monday, Musk slapped his right hand on his heart and then extended his arm. European commentators offer explanations for how the gesture is to be understood.

Greece's conservative Prime Minister Kyriakos Mitsotakis has proposed the speaker of the Greek parliament, Konstantinos Tasoulas, for the office of president. The parliament in Athens will vote on a new head of state on 25 January since Katerina Sakellaropoulou's term in office is coming to an end. Greek commentators discuss Tasoulas's political orientation.

In his inaugural address on Monday, Donald Trump promised a "golden age" and promised that "America's decline" was over. He then signed 78 decrees rescinding measures taken by the Biden administration. The US will withdraw from the Paris Climate Agreement and the World Health Organisation. What changes will the re-elected US president bring, and how should Europe react?

Video app Tiktok is once again available to its users in the US after a brief interlude in which it shut down there. It went online following US President Trump's announced executive order to postpone a ban on the app. The US has a new law that categorises the service, which belongs to the Chinese company Bytedance, as a security risk and provides for its sale. Commentators reflect on the wider context.

Rıza Akpolat, mayor of the Beşiktaş district in the Turkish metropolis of Istanbul and member of the main opposition party CHP, has been arrested on charges that include bribery. President Erdoğan's government has repeatedly taken tough action against opposition politicians. Turkish media see this as another case of a politically motivated move.