US President Donald Trump's first appearance at United Nations leaders week is likely to have the hallmarks of a bucking bull at a rodeo.
Trump is set to lead a charge to reform the UN - an institution he's previously derided on Twitter as "just a club for people to get together, talk and have a good time. So sad!"
Maiden speeches to the General Assembly don't come more highly anticipated than this.
"I personally think he slaps the right people, he hugs the right people and he comes out with the US being very strong in the end," US ambassador to the UN Nikki Haley said, previewing Trump's address.
Even so, Trump might struggle to find friends - he wants to slash the US contribution to the UN's budget, which is the biggest in the world.
And his administration has cut back the number of diplomatic boffins in its delegation compared to when Barack Obama was in power.
Another newbie at leaders week is French President Emmanuel Macron, who is expected to have an uphill battle trying to lobby Trump to keep the 2015 nuclear deal with Iran brokered by the US, Russia, China, Britain, Germany and France.
The North Korean nuclear threat and the Rohingya crisis in Myanmar are also set to dominate the agenda.
Haley has warned the UN Security Council may have run out of diplomatic avenues when it comes to Pyongyang and the US may have to handball the issue to the Pentagon to explore military options.
Myanmar's leader Aung San Suu Kyi has pulled the plug on her visit to New York in the wake of 400,000 Rohingya Muslims fleeing to Bangladesh in the past three weeks.
With a citizenship cloud hanging over Barnaby Joyce - the man who would be acting prime minister - Malcolm Turnbull is staying home.
Foreign Minister Julie Bishop will instead represent Australia at the biggest summit on the international calendar.
She's an old hand when it comes to the difficult diplomatic dances at leaders week after attending in 2015.
Ms Bishop is expected to attend the session on reforming the UN and hold bilateral talks with her Japanese counterpart and an Israeli foreign ministry official on Monday.
She'll also be spruiking Australia's credentials to serve on the UN Human Rights Council in 2018-20.
