Soon after presenting his credentials to the German president, the new U.S. ambassador to Germany, Richard Grenell, told German companies to start leaving Iran.

"As Donald Trump said, U.S. sanctions will target critical sectors of Iran's economy. German companies doing business in Iran should wind down operations immediately," Grenell tweeted Tuesday.

President Trump announced he is pulling the United States out of the nuclear deal with Iran and reimposing sanctions.

Businesses continuing to do business with Iran could be subject to U.S. penalties.

Germany is one of the signatories, and Chancellor Angela Merkel believes the U.S. should have remained in the deal.

美國新任駐德國大使理查德·格雷內爾（Richard Grenell）向德國總統遞交到任國書之后，隨即告訴德國公司開始撤離伊朗。

格雷內爾星期二在推特上發文說：“如唐納德·川普所說，美國的制裁將針對伊朗經濟的關鍵領域。在伊朗做生意的德國公司應該立即開始收攤。“

川普總統宣布，美國推出伊核協議，恢復對伊朗的制裁。

繼續與伊朗做生意的公司可能會面臨美國的懲罰。

德國是伊核協議簽字國之一，德國總理默克爾認為美國應該繼續留在伊核協議。