DUBAI/PARIS, April 22 (Reuters) - An Iranian opposition leader criticised European countries on Wednesday for doing too little to halt executions in Iran, after Tehran carried out another execution in what opponents say is a wartime crackdown on dissent.

The judiciary's news outlet Mizan reported on Wednesday that a man convicted of spying for Israel’s intelligence service and passing sensitive information had been executed.

By America Hernandez

PARIS, April 22 (Reuters) - The natural gas demand destruction currently resulting from the Iran war as governments implement measures to mitigate the crisis risks becoming structural if the conflict persists, the head of the Gas Exporting Countries Forum said on Wednesday.

Since the Middle East crisis began at the end of February, more than 500 million barrels of crude and condensate have been knocked out of the global market, according to Kpler data - the largest energy supply disruption in modern history.

By Sam Tabahriti

LONDON, April 22 (Reuters) - Britain should brace for a rise in cyberattacks linked to hostile states, the head of the country's cybersecurity agency said on Wednesday, as the government urged tech firms to help build defences powered by artificial intelligence.

By Julia Payne

BRUSSELS, April 22 (Reuters) - European Union envoys are set to adopt a 20th package of sanctions against Russia, with Slovakia and Hungary expected to drop their opposition to the move following the repair of the Druzhba oil pipeline, EU diplomats said on Wednesday.

The measures would deepen Europe’s effort to choke off Russian energy revenue and military supplies, as Kyiv seeks stronger action from allies more than four years into Moscow’s full-scale invasion.

By David Jeans

NEW YORK, April 22 (Reuters) - The U.S. military has introduced Ukrainian counter-drone technology in recent weeks at a key U.S. air base in Saudi Arabia, according to five people with knowledge of the matter, as it seeks to stem attacks that have destroyed aircraft and buildings, and killed at least one service member.

ANKARA, April 22 (Reuters) - Turkish Foreign Minister Hakan Fidan will make an official visit to London this week for talks on the wars in Iran and Ukraine, a Turkish diplomatic source said on Wednesday, adding that he will also discuss cooperation between the NATO allies.

Turkey, which neighbours Iran and is in close contact with Tehran, Washington, and mediator Pakistan, hosted a diplomacy forum at the weekend attended by delegations from all sides. It has repeatedly called for an end to the conflict.

Pakistan's capital was still locked in gear on Wednesday to host high-stakes US-Iran talks that were pushed back at the last minute overnight, but many residents began to tire of the heavy personal and economic toll of tight security restrictions.

Markets were quiet, government officials worked from home, children attended class online and security forces enforced strict curbs on entering the vast "red zone" around the negotiating venue.

DUBAI, April 22 (Reuters) - At least three container ships were hit by gunfire in the Strait of Hormuz on Wednesday, maritime security sources and the United Kingdom Maritime Trade Operations (UKMTO) said.

Iran has imposed restrictions on ships using the strait, first in retaliation for the U.S.-Israeli bombardment of the country, and then in response to a U.S. blockade of Iranian ports.

A Liberia-flagged container ship sustained damage to its bridge after being hit by gunfire and rocket-propelled grenades northeast of Oman.

For nearly two years, Al-Shubbak watched through ancient grey eyes as Tuti, the crescent-shaped island in the heart of the Sudanese capital she calls home, emptied of its inhabitants under a punishing paramilitary siege.

She refused to leave.

"I didn't even move for the English when they colonised us," she told AFP through a toothless smile, a year after the army broke the siege, and 70 after the British occupation of Khartoum ended.

KYIV, April 22 (Reuters) - Ukraine has asked Turkey to host a meeting between President Volodymyr Zelenskiy and Russian President Vladimir Putin, its top diplomat said, as Kyiv seeks to reinvigorate stalling peace talks.

"We asked the Turks about it, we asked some other capitals," Foreign Minister Andrii Sybiha said in comments to reporters on Tuesday that were cleared for release on Wednesday.