US Secretary of State Mike Pompeo is using the Middle East leg of his first trip abroad as America's top diplomat to call for concerted international action to punish Iran for its missile programs.
He's also urging Saudi Arabia and its neighbors to resolve a long-festering dispute with Qatar that US officials say Iran is exploiting to boost its influence in the region, including in Yemen and Syria.
Pompeo met Sunday with Saudi King Salman, whose country, along with Bahrain, Egypt and the United Arab Emirates, is embroiled in a row with Qatar that had hobbled Gulf Arab unity and frustrated the US as it seeks to blunt growing Iranian assertiveness.
The ex-CIA chief had arrived in Riyadh a day earlier, shortly after Iranian-backed Houthi rebels in Yemen fired missiles at Saudi Arabia's southern city of Jizan, killing one person and underscoring what US officials said is a growing threat emanating from Iran.
Senior US officials traveling with Pompeo blamed Iran for smuggling the missiles into Yemen. They said the incident highlighted the importance of the Trump administration's push to counter Iran in the region. Iran has also provided crucial support to Syrian President Bashar Assad.
Pompeo reassured Saudi Arabia that the United States would abandon the 2015 nuclear deal with Iran, reached under President Donald Trump's predecessor Barack Obama, unless there is an agreement with European partners to improve it to ensure the Islamic Republic never possesses a nuclear weapson.
"Iran destabilizes this entire region," Pompeo said in a joint press conference with Saudi Foreign Minister Adel al-Jubeir, taking no questions. "It supports proxy militias and terrorist groups. It is an arms dealer to the Houthi rebels in Yemen. It supports the murderous Assad regime (in Syria) as well."
While not mentioning Qatar by name, Pompeo also stressed that Gulf unity was "essential."
Al-Jubeir said the kingdom "supports the policy of the Trump administration against Iran and to improve the terms of the nuclear agreement with Iran."
Senior US officials said he would make it clear to the Saudis that the dispute with Qatar must end.
Mediation efforts led by Kuwait and supported by the US, including former Secretary of State Rex Tillerson, who Trump fired last month, have proven unsuccessful. The split gives Iran "room to play" and hampers cooperation on a wide array of other issues, including combatting violent extremism from the Islamic State and other groups, the officials said.
The officials said Pompeo would call on other nations to impose tougher sanctions against Iranian individuals, businesses and government agencies involved in missile development. They said he'd also stress the US commitment to the defense of Saudi Arabia, Israel and other friends and partners in the region. Pompeo will also press the Saudis on contributing more to stabilization efforts in territory in Syria recently liberated from the Islamic State group, the officials said.
Pompeo's meetings in Saudi Arabia, which will be followed by discussions in Israel and Jordan, come just weeks ahead of several key dates that could bring further volatility to the region.
Trump has set a May 12 deadline to decide whether to pull out of the Iran nuclear deal, something he appears likely to do despite heavy pressure to stay in from European and other parties.
Two days later, the US plans to open its new embassy in Jerusalem. That will mark a significant shift in decades of American policy toward Israel and the Palestinians, who also claim the holy city as their capital.
The embassy move is deeply opposed by the Palestinians, who on May 15 will mark the anniversary of what they term the "nakba," or catastrophe, when they fled or were driven from their homes during the 1948 war that attended Israel's creation. Dozens of Palestinians have been killed by Israeli fire during recent violent protests along border between Israel and Gaza.
During Pompeo's Israel visit, he is expected to meet with Prime Minister Benjamin Netanyahu and discuss Iran. "I will discuss with him developments in the region, Iran's growing aggression and—of course—the nuclear agreement with Iran, about which there will be a decision soon," Netanyahu said Sunday.
On Friday at a NATO foreign ministers meeting in Brussels, the first stop on his trip, Pompeo repeated Trump's pledge to withdraw from the Iran deal unless it is significantly strengthened. He said the US was "unlikely" to stay in if that was not done.
"Absent a substantial fix, absent overcoming the shortcomings, the flaws of the deal, he is unlikely to stay in that deal past this May," Pompeo said.
Also looming over the trip is uncertainty over Trump's policy on Syria, which has shifted between a speedy all-out withdrawal of American forces and leaving a lasting footprint to deter Iran from completing a land bridge from Tehran to Beirut.
Reuters contributed to this story.