Trump claims Houthis agree not to fight US

US President Donald Trump on Sunday claimed Yemen’s Iran-aligned Houthi rebels have agreed not to attack the US.
However, the Yemeni rebel group has stepped up its war against US ally Saudi Arabia, Fox News reported. 
The network's reporter Trey Yingst, who often talks to Trump, cited the president saying that Washington is "in constant communication with the Houthis and that they've agreed not to fight the United States." 
Trump has made the claim before that the Houthis are holding back from attacking US forces in the region.
"The Houthis called us and they don't want to fight with us," Trump said during a visit to Ireland on 12 September. "They don't want us to go after them."
But the latest comments to Fox News came as close US ally Saudi Arabia was under growing pressure, with a missile targeting the capital Riyadh on Saturday.
The Houthis have also staged a rapid offensive inside Yemen, seizing swaths of territory from the internationally recognized government, which is backed by Saudi Arabia.
Fox News reported that Trump is in "deciding mode" on Iran, where US and Israeli forces launched a massive aerial bombing campaign on 28 February before settling into a now almost-seven-month standoff.
Yingst said Trump told him that "big things will be happening in the not so distant future" and that "Iranians better behave, and he is making this decision as to whether or not to blow up their nation."
Meanwhile, an explosion sounded Sunday near Erbil airport, which hosts US-led coalition troops in Iraq's autonomous Kurdistan region, AFP journalists said.
The cause on the explosion remained unclear, and an AFP journalist reported seeing grey smoke rising from near the airport area.
Yemen’s Houthis said they attacked “sensitive” sites in the Saudi capital with missiles and drones, hours after flames and a large plume of black smoke were seen rising above Riyadh airport on Saturday.

Saudi Arabia on Saturday confirmed that  Houthi rebels tried to attack its capital with a ballistic missile, the first targeting of Riyadh since the escalation in fighting with the Tehran-backed rebels that has opened a new front in the Iran war.
The Saudi government sent air raid alerts to citizens by phone overnight warning of aerial attacks, marking the first time the government has issued such alerts for Riyadh since fighting with the Iran-backed Houthis escalated in July. On the other hand, Iran warned on Sunday against any big new attack by the United States and its allies, saying it had information such a move was being prepared, adding to the anxiety in a region already on edge after drone and missile strikes on Saudi Arabia.
Iran's military central command said on state media that any new attack would trigger sustained retaliation against US bases and interests, and that Washington's regional allies would be considered parties to the conflict. It did not elaborate on the information it said it had about a coming US attack.
The US warned that fighting between Saudi Arabia and Houthis could "escalate rapidly" after a missile attack targeted Riyadh.
Trump cut short a weekend at Camp David, a secluded presidential complex in rural Maryland, to return unexpectedly to the White House on Saturday.
The White House gave no explanation for the early return, which comes as a new threshold was crossed in the conflict between Saudi Arabia and the Houthis, who control a large part of Yemen and are fighting government forces backed by a coalition led by Riyadh.