Foreign Minister Julie Bishop will tell world leaders how Australia plans to address extreme poverty, in a speech to the United Nations.
Ms Bishop on Sunday (Monday AEST) will also take part in a ministerial meeting on countering terrorism, ahead of a leader-level summit on Tuesday attended by United States President Barrack Obama and Russian President Vladimir Putin.
The ministerial meeting will hear from US Secretary of State John Kerry.
It follows an indication from Ms Bishop that the federal government could abandon its long-held position that Syrian President Bashar al-Assad must step aside as part of any durable peace settlement.
The major policy shift reflects the emerging international consensus that the Assad regime would likely be pivotal in preventing further gains by terrorist group Islamic State.
While attending the United Nations General Assembly in New York, Ms Bishop said the reality was President Assad was still in Syria and Australia had to be open to all options to end the bloodshed.
Also during her trip, Ms Bishop joined world leaders in endorsing 17 ambitious anti-poverty goals.
They include promoting sustainable agriculture, ensuring healthy lives, quality education and empowering women and girls.
Combating climate change and promoting peaceful and inclusive societies are also listed.
The federal government has been criticised for its cuts to foreign aid - which is due to drop to 0.22 per cent of GDP - while one of the new sustainable development goals sets a 0.7 per cent target.
Ms Bishop also joined counterparts from a key grouping of countries to affirm they will make their best efforts to ensure success at a key climate change conference in Paris.
On the sidelines of the UN meetings, Ms Bishop chaired a meeting of the MIKTA group comprising Mexico, Indonesia, South Korea, Turkey and Australia.
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