President Donald Trump and Chinese President Xi Jinping are likely to speak this week to try and salvage trade negotiations after each side has accused the other of violating previous agreements.

China said on Monday that U.S. President Donald Trump's accusations that Beijing had violated the consensus reached in Geneva trade talks were "groundless", and promised to take forceful measures to safeguard its interests.

Some of the challenges are self-inflicted, but a fresh set of court rulings questioning the president’s authority to enact tariffs hangs over his trade agenda.