Government policy

In this photo released by state-run IRIB News Agency, which aired on Monday, July 22, 2019, shows various crew members of the British-flagged tanker Stena Impero, that was seized by Tehran in the Strait of Hormuz on Friday, during a meeting. The Associated Press cannot independently verify the condition of the crew members, but in the video they looked to be in good health and it didn't appear as though they were being filmed under duress. (IRIB News Agency via AP)

Military vehicles and equipment, parts of the S-400 air defense systems, are unloaded from a Russian transport aircraft, at Murted military airport in Ankara, Turkey, Friday, July 12, 2019. The first shipment of a Russian missile defense system has arrived in Turkey, the Turkish Defense Ministry said Friday, moving the country closer to possible U.S. sanctions and a new standoff with Washington. The U.S. has strongly urged NATO member Turkey to pull back from the deal, warning the country that it will face economic sanctions. (Turkish Defence Ministry via AP, Pool)

Papua New Guinea's Prime Minister James Marape, second from left, shakes hands with Australian Prime Minister Scott Morrison, watched by their respective wives Rachael Marape, left, and Jenny Morrison after signing the visitors' book at Australia's Parliament House in Canberra Monday, July 22, 2019. Marape says his country's relationship with China in not open to discussion during his current visit to Australia. (AP Photograph/Rod McGuirk)

FILE - In this June 28, 2019 file photo, Ashlyn Myers of the Coalition for Life St. Louis, waves to a Planned Parenthood staff member in St. Louis, Mo. The Trump administration has told federally-funded family planning clinics it may be willing to delay enforcement of a controversial rule that bars them from referring women for abortions. (Robert Cohen/St. Louis Post-Dispatch via AP)

A British-flagged oil tanker Stena Impero which was seized by the Iran's Revolutionary Guard on Friday is photographed in the Iranian port of Bandar Abbas, Saturday, July 20, 2019. The chairman of Britain's House of Commons Foreign Affairs Committee says military action to free the oil tanker seized by Iran would not be a good choice. Tom Tugendhat said Saturday it would be "extremely unwise" to seek a military solution to the escalating crisis, especially because the vessel has apparently been taken to a well-protected port. (Tasnim News Agency/via AP)

In this May 2, 2013 photo the Liberian-flagged oil tanker Mesdar is seen at an unknown location. British Foreign Secretary Jeremy Hunt confirmed Friday July 19, 2019 that Iran had seized one British, the Stena Impero, and one Liberian-flagged vessel, Mesdar, in the Strait of Hormuz. It was the latest escalation of tension in the strategic waterway that has become a flashpoint in tensions between Tehran and the West. (John Pitcher via AP) MANDATORY CREDIT

FILE - In this Thursday, July 4, 2019 file photo, a Royal Marine patrol vessel is seen beside the Grace 1 super tanker in the British territory of Gibraltar. Taken on its own, Iran’s seizure of a British-flagged oil tanker in the Strait of Hormuz may seem like a brazen act of aggression, a provocative poke in the nose to both Britain and its chief ally, the United States. But Iran seems to view the armed takeover of the Stena Impero as a carefully calibrated response to the July 4 taking of an Iranian supertanker off the coast of Gibraltar, an operation in which Britain’s Royal Marines played a major role. (AP Photo/Marcos Moreno, File)

In this May 5, 2019 photo issued by Karatzas Images, showing the British oil tanker Stena Impero at unknown location, which is believed to have been captured by Iran. Iran's Revolutionary Guard announced on their website Friday July 19, 2019, it has seized a British oil tanker in the Strait of Hormuz, the latest provocation in a strategic waterway that has become a flashpoint in the tensions between Tehran and the West. (Basil M. Karatzas, Karatzas Images via AP) MANDATORY CREDIT

In this undated photo issued Friday July 19, 2019, by Stena Bulk, showing the British oil tanker Stena Impero at unknown location, which is believed to have been captured by Iran. Iran’s Revolutionary Guard announced on their website Friday July 19, 2019, it has seized a British oil tanker in the Strait of Hormuz, the latest provocation in a strategic waterway that has become a flashpoint in the tensions between Tehran and the West. (Stena Bulk via AP)