Rouhani did not mention Israel's strikes Thursday against what the Jewish state said were Iranian targets in Syria, or those against the Israeli-occupied Golan Heights.
Dr Merkel called for restraint from both countries.
The incident came after weeks of rising tensions and followed US President Donald Trump's decision to withdraw from a key 2015 Iran nuclear deal on Tuesday, a move Israel had long advocated.
The main problem in doing business with Iran is the reluctance of global banks to finance business deals. They then called on the United States to ensure that the structures of the JCPOA could remain intact, and to avoid taking action which may obstruct its full implementation by all other parties to the deal.
"Did she really need to say that it was necessary to welcome a million migrants", Lagerfeld questioned in his interview.
According to the BGA, trade topped 3.4 billion euros (4.0 billion dollars) in 2017, with Iran benefiting more than German exporters, on account of its oil exports.
Rory McIlroy and Tiger Woods left frustrated at Quail Hollow
When Woods and Mickelson go head-to-head this week, with Fowler rounding out the super-group, we'll all be a witness. Mickelson won earlier this year at the WGC event in Mexico, halting a five-year-drought after his 2013 British Open.
The official said discussions with US authorities would include the Office of Foreign Assets Control (OFAC), which is tasked with overseeing USA economic sanctions. "The German government and the EU are called on to protect EU-Iranian trade and to restore the confidence that has been lost", it said.
Trump has also warned European companies to pull out of Iran or face sanctions.
Macron is only now realizing that the two parties in the German governing coalition are weak, and that "they can even be seen as the [October election's] main losers", said a European diplomat. However, all failed to reach an agreement with the US President.
The VCI chemical industry association called for the deal to be adhered to.
The VDMA mechanical engineering industry association said the ball was now in Iran's court.
In the short-term perspective, both Iran and other members of the nuclear deal will continue to adhere to the 2015 agreement, but the unilateral USA decision paves way for Iran to more actively pursue its ballistic missile program as well as strengthen its involvement in Syria, Iraq, Yemen and Lebanon. German-Iranian commerce has soared by 42 percent since sanctions were loosened in 2016, gradually returning to levels last experienced in the decade between 2000 and 2010.