Oil prices have been rising as shipping through the strait has essentially stalled since late February.

President Donald Trump said he ordered the U.S. Navy to find and interdict any ship in international waters that has paid a toll to Iran to transit the strait.

Oil prices are rising in early market trading after the U.S. said it would blockade Iranian ports beginning Monday.

Oil prices surged past $100 after U.S.-Iran talks collapsed and Washington moved toward a naval blockade, setting a cautious tone for Asia markets at the open.

The failure of negotiations at the weekend has raised concerns that the global energy crisis will deepen.

Asian stocks fall as naval blockade threat injects new turmoil into financial markets.

The threat from the president has left global markets in another period of uncertainty, with questions over how the blockade will be enforced

US Navy to impose blockade today in bid to choke off flow of Iranian oil

Iran responded with threats on ports in the Persian Gulf and the Gulf of Oman.

Stock markets have not reacted as fiercely as they did at the start of the conflict amid belief US-Iran talks may resume

While US military says it will blockade Iranian ports only, move would have ripples worldwide, according to analysts.

Oil prices have been rising as shipping through the strait has essentially stalled since late February.

The U.S. military said it will begin stopping all ships from leaving or entering Iran's ports in line with a blockade ordered by President Donald Trump.

Updated marine traffic map of Iran shows shops near blocked Strait of Hormuz. Latest escalation may impact gas prices. Iran declares blockade 'piracy'

U.S. President Donald Trump announced the blockade after weekend peace talks in Islamabad between the U.S. and Iran failed to reach a deal.