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Tankers are seen off the coast of the Fujairah, as Iran vows to close the Strait of Hormuz.Amr Alfiky/Reuters

President Donald Trump’s pledge to ensure safe passage of oil and natural gas through the Strait of Hormuz shipping chokepoint calmed markets somewhat on Wednesday even though Israeli and U.S. attacks on Iran continued in full force, Israel vowed to assassinate the next Iranian leader and a container ship in Hormuz was hit.

The ship was struck Wednesday by a projectile “just above the water line, causing a fire in the engine room,” the U.K.’s Maritime Trade Operations centre said. A U.S. submarine sank an Iranian frigate in international waters in the Indian Ocean, U.S. defence secretary Pete Hegseth confirmed. Various reports said 150 crew members were missing.

In mid-afternoon trading, European gas prices were more or less flat after climbing more than 70 per cent since Monday, when ships carrying liquefied natural gas (LNG) to Europe and Asia stopped crossing Hormuz.

What to know about the Strait of Hormuz

Oil climbed early in the day, then lost its gains. In afternoon trading in London, Brent crude, the international benchmark, was down slightly to about US$81 a barrel. Before the Israeli and U.S. attacks on Iran started on Saturday, Brent was trading at US$73.

The FTSE-100 index was up almost 1 per cent in the afternoon; Germany’s DAX index, whose selloff on Monday and Tuesday was severe, climbed 1.5 per cent.

Asian markets continued to see steep declines, reflecting the region’s dependency on the Middle East for oil and LNG. South Korea’s benchmark Kopsi lost 12 per cent after shedding 7.2 per cent on Tuesday – the index’s worst two-day performance since the 2008 financial crisis. Markets in Japan and Taiwan each fell about 4 per cent

Mr. Trump, evidently sensitive to rising gasoline prices in the U.S. during an election year – the congressional mid-term poll is set for November – on Tuesday said that the U.S. International Development Finance Corp. would offer shipping insurance to tankers “at a very reasonable” price to ensure the flow of energy through Hormuz.

He also said the U.S. Navy would escort ships through Hormuz “as soon as possible,” if necessary.

Critical choke point

Islamic Revolutionary Guard Corps bases

Maritime

boundary

Tehran

IRAN

Bandar-e-Abbas

Larak Island

Bahrain:

HQ of U.S.

5th Fleet

Qeshm

Deepwater

shipping lane

IRAQ

IRAN

KUW.

OMAN

SAUDI

ARABIA

Strait of

Hormuz

U.A.E

Sirri

OMAN

Abu

Musa*

Jask

IRAN

U.A.E

Persian Gulf

Fujairah

Abu

Dhabi

UNITED

ARAB

EMIRATES

Shipping lanes are

2,700m wide, separated

by buffer zone

OMAN

40 km

*Occupied by Iran, claimed by U.A.E.

the globe and mail, Source: graphic news; iran

international; reuters

Critical choke point

Islamic Revolutionary Guard Corps bases

Maritime

boundary

Tehran

IRAN

Bandar-e-Abbas

Larak Island

Bahrain:

HQ of U.S.

5th Fleet

Qeshm

Deepwater

shipping lane

IRAQ

IRAN

KUW.

IRAN

SAUDI

ARABIA

Strait of

Hormuz

U.A.E

Sirri

OMAN

Abu

Musa*

Jask

IRAN

U.A.E

Persian Gulf

Fujairah

Abu

Dhabi

UNITED

ARAB

EMIRATES

Shipping lanes are

2,700m wide, separated

by buffer zone

OMAN

40 km

*Occupied by Iran, claimed by U.A.E.

the globe and mail, Source: graphic news; iran

international; reuters

Critical choke point

Islamic Revolutionary Guard Corps naval bases

Tehran

Maritime

boundary

Bandar-e-Abbas

Larak Island

IRAN

Qeshm

Deepwater

shipping lane

Bahrain:

HQ of U.S.

5th Fleet

IRAQ

IRAN

KUW.

SAUDI

ARABIA

Strait of

Hormuz

U.A.E

Sirri

OMAN

Abu

Musa*

Jask

IRAN

U.A.E

Persian Gulf

Fujairah

Abu

Dhabi

UNITED

ARAB

EMIRATES

Shipping lanes are

2,700m wide, separated

by buffer zone

OMAN

40 km

*Occupied by Iran, claimed by U.A.E.

the globe and mail, Source: graphic news; iran international; reuters

Details were scant and it was not immediately clear when the insurance plan would be in place, or even if U.S. laws allow navy ships to escort merchant ships that are not U.S.-flagged or American-owned.

Hormuz is the narrow channel – 33 kilometres across at its narrowest point – that separates the Persian Gulf from the Gulf of Oman on the Indian Ocean. About 20 per cent of global oil and LNG travels through Hormuz on the way to global markets, especially those in Asia and Europe.

Hormuz has been closed since Saturday due to the cancellation of shipping insurance policies and the possibility of drone and missile attacks from Iran, which effectively controls the strait.

The closing of the strait has triggered oil and LNG productions cuts, since their output can’t be loaded on ships.

Opinion: War in the Middle East makes the case for more Canadian energy and expanding the Port of Churchill

QatarEnergy, the world’s biggest LNG company, suspended production on Monday after a drone attack. While the damage was minor, its LNG facility has not reopened because gas ships have been unable to travel through Hormuz. On Wednesday, the company declared force majeure, allowing it to cease supplying customers because of unforeseen extreme invents – war, in this case.

Analysts on Wednesday had doubts whether the U.S. Navy’s presence in the strait would be enough to protect oil and LNG ships from attack.

“Advances in drone warfare make defending the world’s most critical energy chokepoint extremely onerous, even for the most powerful military on the planet,” Montreal’s BCA Research said in its latest investor note.

Bimco, the world’s biggest trade group for shipowners, said that providing protection for all tankers passing through Hormuz “is unrealistic” due to the number and range of military assets that would be needed to keep them safe.

Throughout Wednesday, there was no sign that the Israeli and U.S. attacks on Iran would ease anytime soon.

Israel said it had launched “extensive strikes” against Iranian missile sites, infrastructure and defence systems. Its Defence Minister, Israel Katz, vowed to assassinate the leader chosen to replace Ayatollah Ali Khamenei, who was killed in his office in Tehran during the initial attacks early on Saturday.

The threats came as reports surfaced that Mojtaba Khamenei would succeed his father as supreme leader as early as Wednesday. He is 56, reclusive and known to have close ties to Iran’s Revolutionary Guards.

Mr. Katz said in a statement that “any leader appointed by the Iranian terrorist regime to continue leading the plan to destroy Israel … will be an unequivocal target for elimination.”

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