Donald Trump warned Recep Tayyip Erdogan he would be remembered as a "devil" if Turkey invaded Syria, telling him "don't be a tough guy" in a letter sent to the Turkish President two days after US troops were ordered out of the country's north.

Mr Trump told Mr Erdogan he wanted to "work out a good deal" and threatened that he could destroy the Turkish economy.

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The US President referenced the damage done by economic sanctions imposed on Turkey in 2018 to secure the release of American pastor Andrew Brunson, who Turkey jailed for supposed links to Kurdish militants, as evidence of what he could do.

Mr Trump told Mr Erdogan that Kurdish General Mazloum Kobani, whose forces are guarding prisons holding Islamic State fighters, was willing to make concessions in negotiations with the Turkish Government.

Turkey last week launched its offensive against Kurdish forces, which Mr Erdogan deems a terrorist organisation.

The Turkish Red Crescent said 200,000 civilians have been displaced by the action.

Mr Trump's decision to pull troops out the region has been widely condemned by both sides of US politics, with strident supporter Senator Lindsay Graham labelling it the worst decision of Mr Trump's presidency.

US allies in Europe and the Middle East, including Saudi Arabia and Israel, have also condemned the Turkish military offensive.

US Vice-President Mike Pence and Secretary of State Mike Pompeo are headed to Turkey to meet with Mr Erdogan to mitigate the fallout of the US withdrawal.

Here's Mr Trump's letter in full.