LONDON (AP) — Ireland ’s government could face a no-confidence vote Tuesday in Parliament over how it has handled a week of fuel protests that blocked access to oil supplies and a major port and caused massive traffic jams.

Prime Minister Micheál Martin announced new tax cuts to try to end the crisis that began after the U.S.-Israel war on Iran led to the closure of the Strait of Hormuz, a vital channel for the world’s oil. But opposition parties blasted the government for failing to respond sooner and criticized the aid it offered.

Sinn Fein, the largest opposition party, called for the no-confidence vote scheduled Tuesday evening. But Martin’s coalition government has scheduled an earlier vote of support that could make the no-confidence motion moot if passed.

The passage of a no-confidence vote would force the ruling government to resign and lead to either Parliament voting on a new prime minister to form a government or triggering a new general election. The Social Democrats, Labour, People Before Profit, Aontu, The Green Party and Independent Ireland have said they would back the motion.

Protests began April 7 with slow-moving convoys clogging roadways. They grew as word spread on social media as truckers, farmers and taxi and bus operators blocked key infrastructure and the main thoroughfare in the capital, Dublin.