US Secretary of State Mike Pompeo cancelled a visit to Germany on Tuesday, just hours before he was due to arrive in Berlin for talks with German Chancellor Angela Merkel.

"Unfortunately, we must reschedule the Berlin meetings due to pressing issues," a State Department official said in a statement posted by the US Embassy in Berlin.

"We look forward to rescheduling this important set of meetings," the statement added. The United States' top diplomat was scheduled to meet with Merkel and German Foreign Minister Heiko Maas.

Later on Tuesday night, reports emerged that Pompeo traveled to Iraq on an unannounced visit.

Pompeo is due to meet with Iraqi Prime Minister Adel Abdel-Mahdi in Baghdad, Iraqi government sources told news agencies AFP, Reuters and DPA.

The abrupt change in itinerary comes amid escalating tensions between the US and Iran. On Sunday, the US announced it was sending an aircraft carrier and bombers to the Middle East to send a "clear and unmistakable" message to Iran.

Pompeo met with Russian Foreign Minister Sergei Lavrov on Monday in Finland

Trip to UK still set to happen

Pompeo kicked off his European tour by attending an Arctic Council meeting in Finland. He had a private meeting with Russian Foreign Minister Sergei Lavrov on Monday.

The US Secretary is also scheduled to travel to the UK on Wednesday for talks with British Prime Minister Theresa May and Foreign Secretary Jeremy Hunt.

The US Embassy in London said that the meeting "is still going ahead." Pompeo is also due to give a speech on the special relationship between the US and the UK.

Pompeo's trip to Europe was originally scheduled to end in Greenland on Thursday.

Russia's foreign ministry announced that Pompeo will be returning for a meeting with Lavrov in the Russian city of Sochi next week, according to news agency AFP. During that trip, he may also meet with Russian President Vladimir Putin, although the Kremlin didn't provide further details.

Although the US and German governments did not immediately provide details on the reason for calling off the Tuesday meeting, the announcement comes amid strained ties between Washington and Berlin.

US President Donald Trump has repeatedly complained that Germany is lagging behind in defense spending for NATO. The two countries are also at odds over the Nord Stream 2 project to build a gas pipeline between Germany and Russia.

Watch video 01:55 Share US criticizes Germany over defense spending Send Facebook google+ Whatsapp Tumblr linkedin stumble Digg reddit Newsvine Permalink https://p.dw.com/p/3FKaR US criticizes Germany over defense spending

rs/se (AP, AFP, dpa, Reuters)

Every evening, DW sends out a selection of the day's news and features. Sign up here.