LONDON/BRUSSELS, Sept 27 (Reuters) - The world's poorest countries have said they may struggle to meet visa requirements and cover all COVID-19 quarantine costs for the COP26 climate summit, raising concerns that some might not be able to attend in person.

VIENNA, Sept 27 (Reuters) - Iran must grant the U.N. nuclear watchdog access to a workshop at the TESA Karaj complex as agreed two weeks ago or face diplomatic retaliation at the agency's Board of Governors within days, the United States said on Monday.

Sept 27 (Reuters) - A growing number of countries are looking at switching to different COVID-19 vaccines for second doses or booster shots after supply delays and safety concerns slowed their vaccination campaigns.

Sept 27 (Reuters) - Swedish electric-car maker Polestar said on Monday it will go public by merging with a blank-check firm backed by billionaire Alec Gores and investment bank Guggenheim Partners at a valuation of $20 billion including debt.

WARSAW, Sept 27 (Reuters) - Poland's interior minister said on Monday he will recommend extending the state of emergency on the Belarus border by 60 days, after Warsaw said many of those crossing the border posed a threat to national security.

AMSTERDAM (Reuters) - The prosecutor of the International Criminal Court on Monday said his office was seeking court approval to resume its war crimes investigation focusing on Afghanistan.

BERLIN, Sept 27 (Reuters) - Two German politicians from the Greens have made history by becoming the first transgender women to win parliamentary seats in Sunday's national election.

MADRID (Reuters) - The Cumbre Vieja volcano on Spain's La Palma island is again expelling lava and smoke, researchers said on Monday after activity had slowed to a near halt earlier in the day.

VIENNA (Reuters) - Iran must grant the U.N. nuclear watchdog access to a workshop at the TESA Karaj complex to re-instal cameras as agreed this month or face diplomatic action by the watchdog's Board of Governors, the United States told a board meeting on Monday.