President Trump on Tuesday will address for the third time the United Nations General Assembly and try to rally global support for checking Iran following the bombing of Saudi oil facilities earlier this month.

The president will ​assert America’s leadership role in the “rules-based international system and the need to work collectively within the global community to address global challenges​,” a senior administration official said.

​He will also ​reiterate the US’ determination “to uphold the sovereignty and independence of member states, especially on issues of national security.​”​

Trump is expected to blame Iran for carrying out the attacks on the refinery and oil fields on Sept. 14 using a combination of drones and cruise missiles.

​Tehran has denied any involvement and pointed to claims of responsibility from Houthi rebels battling Saudi coalition forces in Yemen.

Iran is backing the insurgent group.

Secretary of State Mike Pompeo called the strikes an “act of war.”

A number of world powers — including the United Kingdom, France and Germany — have come forward to join the US and Saudi Arabia in blaming Iran.

The three countries are trying to salvage the 2015 nuclear deal they signed with Iran in 2015. Trump withdrew the US from that deal last year and reimposed crippling economic sanctions on Tehran as part of a “maximum pressure” campaign.

But the trio of European nations on Monday urged Iran to return to the negotiating table.

“The time has come for Iran to accept negotiation on a long-term framework for its nuclear program as well as on issues related to regional security, including its missiles program and other means of delivery,” Britain, France and Germany said in a statement.

Iranian President Hassan Rouhani has doused chances for renewed talks, saying all of the penalties would have to be lifted before Tehran would begin negotiations.

Trump has said he has no plans to meet with Rouhani at the UN but wouldn’t rule it out. ​

In his 10:15 a.m. address, the president is also expected to galvanize support against Nicolas Maduro’s regime in Venezuela.

​The US and a number of Latin American countries agreed Monday to investigate government officials suspected of drug trafficking, money laundering and supporting terrorism.

Trump is also expected to discuss his relationship with North Korean leader Kim Jong Un, whom he called “Rocket Man” in his 2017 speech to the world body.

He said another meeting “could happen soon” with Kim amid the two countries’ inability to hammer out a deal that would rein in the reclusive regime’s nuclear weapons program.

Trump and Kim have met three times — at summits in Singapore and Hanoi, and at the Demilitarized Zone, where Trump became the first US president to set foot in North Korea.

With Post wires