An unusually active typhoon season is disrupting shipping operations across Asia, with Shanghai particularly hard hit by snarled traffic and vessel delays.

Iran and the US carried out what appeared to be their largest tit-for-tat tanker strikes yet over the weekend, pushing oil prices higher as both nations continue to escalate a six-month war that has disrupted shipping and stoked global inflation.

The US military said it launched strikes against three Iranian crude oil tankers, destroying one, in retaliation for the Islamic Revolutionary Guard Corps targeting two US Navy warships with ballistic missiles.

A key measure of bulk-shipping rates has touched a two-year high and risks climbing further, according to analysts, as bad weather crimps the availability of Capesize vessels just as exporters ramp up delivery.

US-Iran tensions over the Strait of Hormuz heightened after a flurry of military strikes at the start of the week, with neither side prepared to cede ground over the crucial waterway.

Indonesia, Malaysia and Singapore — countries that share the primary stewardship of the Strait of Malacca — said on Tuesday they were committed to keeping the narrow corridor and the waters around it “free, open and safe for international shipping.”

Saudi Arabia is yet again being forced to overhaul how its oil gets to customers around the world, as Yemen’s Houthis make it harder for Riyadh to use a backup route that’s been vital to the global economy since the Iran war started.

Three China-linked supertankers have U-turned in the Strait of Hormuz as risks to shipping remain elevated, with prospects for a normalization of traffic dimming after President Donald Trump took a hard line on Iran.

A fuel tanker trying to enter the Persian Gulf has made an erratic series of turns and come to a halt near Iran’s Qeshm Island, as the country steps up efforts to control the Strait of Hormuz.

Major crop buyers across Asia are turning to alternative suppliers as attacks escalate in the Black Sea, crimping exports from the breadbasket region at a vital point in the season.

Supertankers are going dark for longer to get oil through the Strait of Hormuz and the Bab el-Mandeb strait, doubling down on tactics honed in the earlier days of the Iran war.

A key oil supply valve from the Middle East that involves shuttle transits through the Strait of Hormuz is continuing to function in the face of a recent spate of attacks.

Turkey is restricting some commercial ship traffic into the Black Sea, according to people familiar with the matter, following growing concern from the government over an uptick in Russian and Ukrainian attacks on vessels in the area.

The key Saudi export port of Yanbu in the Red Sea appeared to have its busiest day since Houthi threats upended shipping in the region, while more ships transited dark through the Bab el-Mandeb chokepoint.

A liquefied natural gas tanker carrying a shipment from Qatar was struck by a projectile while transiting the Strait of Hormuz, according to security intelligence firms and ship tracking data, threatening to further disrupt deliveries of the super-chilled fuel through the key waterway.

US embassies across the Middle East urged Americans to exercise caution after President Donald Trump said he was considering new military strikes against Iran.

Six Saudi oil tankers are sailing away from the Bab el-Mandeb chokepoint and appeared to be embarking on an unusual trip around Africa as threats from Houthi rebels upend shipping in the Red Sea.

Shipping across the crucial Strait of Hormuz has picked up in recent days despite a continuation of hostilities in the Middle East, with the US claiming its navy escorted some tankers across the waterway.

Empty supertankers are heading to Egypt’s Mediterranean port of Sidi Kerir to collect Saudi Arabia’s crude, a signal of wariness among some shipowners about sailing closer to Houthi-threatened waters.

An Asia-bound supertanker carrying Saudi oil has exited the Red Sea via the longer Suez Canal route while other vessels continue to risk the Bab el-Mandeb Strait, as Houthi threats heighten uncertainty in the region.