Istanbul - President Recep Tayyip Erdogan appealed to Turks’ religious and patriotic feelings ahead of Eid on Monday, promising they would not be brought “to their knees” by an economic crisis that has battered the lira currency.

The lira has tumbled some 40 per cent this year, hit by worries about Erdogan’s influence over monetary policy and a worsening diplomatic rift with the United States. The sell-off has spread to other emerging market currencies and global stocks in recent weeks.

Highlighting the increased tensions, the US embassy in the Turkish capital Ankara came under brief gunfire early on Monday by unknown assailants in an attack condemned by Erdogan’s spokesman as a bid “to create chaos”. Nobody was hurt. A person was later detained, Anadolu news agency said.

In a pre-recorded address to mark the Eid, which starts on Tuesday, Erdogan, a pious Muslim, sounded a characteristically defiant note as he lashed out at those selling the lira.

“The attack on our economy has absolutely no difference from attacks on our call to prayer and our flag. The goal is the same. The goal is to bring Turkey and the Turkish people to their knees - to take it prisoner,” Erdogan said in the televised address.

“Those who think they can make Turkey give in with the exchange rate will soon see that they are mistaken.” Erdogan stopped short of directly naming any countries or institutions, but he has, in the past, blamed a shadowy “interest rate lobby”, Western ratings agencies and financiers.

Much of the recent tension has centred around a U.S.

evangelical Christian pastor, Andrew Brunson, who has been detained in Turkey on terrorism charges, which he denies.

Brunson, originally from North Carolina, has lived in Turkey for two decades and has become an unwitting flashpoint for the diplomatic rift.

On Friday, a Turkish court rejected Brunson’s appeal for release, drawing a stiff rebuke from President Donald Trump, who said the United States would not take the detention of the pastor “sitting down”.

In response to Brunson’s case, Trump - who counts evangelical Christians among his core supporters - has said he would double previously announced tariffs on Turkish steel and aluminium imports.

Turkey said on Monday it had initiated a dispute complaint with the World Trade Organisation over the additional tariffs.

The lira weakened to 6.1290 to the dollar by 1546 GMT on Monday, from a close of 6.0100 on Friday.

On Friday two ratings agencies, Moody’s and Standard & Poor’s, further cut Turkey’s sovereign rating into junk territory.