Donald Trump has said he believes Tehran wants to make a deal to head off a regional conflict, as he claimed the US “armada” near Iran was bigger than the task force deployed to topple Venezuela’s leader.

Axar.az, citing The Guardian, reports that the US President stated: “We have a large armada, flotilla, call it whatever you want, heading toward Iran right now, even larger than what we had in Venezuela,” the US president told reporters on Friday.

“Hopefully, we’ll make a deal. If we do make a deal, that’s good. If we don’t make a deal, we’ll see what happens.”

He declined to say whether he planned a repeat of the military operation in Venezuela in which US forces captured and renditioned the president, Nicolás Maduro.

“I don’t want to talk about anything having to do with what I’m doing militarily,” he said.

His comments came after Iran’s foreign minister, Abbas Araghchi, said Tehran was ready to negotiate with the US, but only if talks were not under duress and did not extend to Iran’s missile programme.

After meetings with Turkish diplomats, Araghchi said Iran was “ready to begin negotiations if they take place on an equal footing, based on mutual interests and mutual respect”. He said there were no immediate plans to meet US officials, adding: “I want to state firmly that Iran’s defensive and missile capabilities will never be subject to negotiation.”

Araghchi said: “The Islamic Republic of Iran, just as it is ready for negotiations, is also ready for war.”

Trump said on Thursday he hoped to avoid military action, even as the US deployed another warship to the Middle East, joining the USS Abraham Lincoln and several guided-missile destroyers.

But his precise objectives remain unclear. Speaking at the premiere of the documentary Melania, the US president told reporters Iran had to do “two things” to avoid military action. “Number one, no nuclear. And number two, stop killing protesters,” saying that “they are killing them by the thousands”.