Donald Trump assured French President Emmanuel Macron Saturday that Saudi Arabia is the cornerstone of stability in the Middle East He said he refuses to allow anything to undermine the Kingdom"s stability LONDON: US President Donald Trump assured French President Emmanuel Macron Saturday that Saudi Arabia is the cornerstone of stability in the Middle East, a French presidency source reported. Trump also said that he refuses to allow anything to undermine the Kingdom’s stability, and emphasized Saudi Arabia’s importance as a partner of the United States. The two presidents held a meeting at the Elysee Palace on the eve of the commemoration ceremony for Armistice Day, 100 years after the end of the First World War, in Paris, France. The US and French presidents are also keen that a political solution in Yemen is found, and pushed for foundations of the solution to be laid. Trump assured Macron of the effectiveness of sanctions on Iran, and called for a new agreement to ensure that Iran does not obtain nuclear weapons, the presidency source said. Trump"s visit kickstarts two days of events marking the centenary of the end of World War 1. Some 70 leaders will gather at 11 am Sunday (1000 GMT) at the tomb of the Unknown Soldier at the Arc de Triomphe, in Paris, to mark the 100th anniversary of the end of World War I.