Talks at the G7 summit in Canada have failed to resolve deep differences between US President Donald Trump and leaders of major industrial nations.
The divisions were laid bare on Friday, notably over trade.
Allies of the US are furious over Mr Trump's recent decision to impose tariffs on steel and aluminium imports, raising fears of a global trade war.
It is unclear whether a communique agreed by all will be released when the meeting concludes later on Saturday.
The two-day summit is being held in the town of La Malbaie, in Quebec province.
Mr Trump is due to leave early on Saturday to head to Singapore for a landmark meeting with North Korean leader Kim Jong-un.
Divisions wider than trade
By the BBC's diplomatic correspondent, James Robbins, Quebec
This summit started very badly, and it could end without the usual communique agreed by all.
Divisions between Mr Trump and the other six leaders go way beyond trade - they include climate change, relations with Iran and the Israel-Palestinian conflict.