Wall Street and oil moved higher, following a weekend during which US President Donald Trump made few stumbles in his first overseas trip and major oil producers seemed to agree on extending a plan to curtail output.
OPEC and its partners are expected to prolong an agreement to limit production when they gather this Thursday.
"The decision [to extend cuts] seems to be almost a done deal," Bjarne Schieldrop, chief commodities analyst at SEB Markets, told Reuters. "There seems to be a very high harmony in the group."
Wall Street also advanced as Trump travelled in the Middle East, a welcome reprieve from the intensifying crisis over reports that he tried to obstruct a probe into his campaign's links to Russia.
In 2.42pm trading in New York, the Dow Jones Industrial Average rose 0.5 per cent, while the Nasdaq Composite Index advanced 0.7 per cent. In 2.27pm trading, the Standard & Poor's 500 Index increased 0.5 per cent.