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In a series of tweets this morning, President Trump announced that transgender people will no longer be eligible for military service. "After consultation with my Generals and military experts, please be advised that the United States Government will not accept or allow transgender individuals to serve in any capacity in the U.S. Military," Trump wrote on Twitter. According to a study by RAND Corporation, thousands of active troops are transgender. This story is developing.

The amount of sperm that men in Western countries produce declined by 52 percent over the course of 40 years, a new study indicates. A team of researchers analyzed data from 185 studies conducted between 1973 and 2011 that involved a total of 43,000 men. They concluded that sperm count decreased by an average of 1.4 percent a year during the period. "The results are quite shocking," said lead author Hagai Levine, who works at the Hebrew University of Jerusalem. The reasons for the sharp decline are unknown, the study says.

A U.S. Navy boat fired warning shots at an Iranian military ship that was headed for a collision, the Defense Department said. U.S. and coalition ships were carrying out a military exercise at an unidentified location when the incident occurred. First the crew on the USS Thunderbolt vessel tried and failed to establish radio contact with the Iranian ship. The U.S. boat then fired warning flares and sounded a danger signal twice. As the Iranian ship came to within 150 yards, shots were fired as a warning, said U.S. Defense Department spokesman Adrian Rankine-Galloway. – WAPO

Senators on Tuesday evening rejected the Better Care Reconciliation Act designed to partially repeal and replace Obamacare. The bill included amendments from Senator Ted Cruz, to allow the sale of cheaper insurance plans, and from Senator Rob Portman, to add $100 billion in insurance spending for low-income people. Since the amendments had not been reviewed by the Congressional Budget Office, the Senate’s GOP leadership needed to secure at least 60 votes to approve the bill, instead of a simple majority. Senators will reportedly vote on Wednesday on a separate bill to repeal Obamacare that was approved in 2015 by both chambers of Congress, but was vetoed by then-President Barack Obama. – NBC

Police have detained a man who is accused of wounding two people with a chainsaw in Switzerland earlier this week. Franz Wrousis, a 50-year-old man who has a criminal record and lived in the woods, was arrested in the town of Thalwil, which is about 60 km away from Schaffhausen, where the attacks occurred. The suspect allegedly entered an insurance office on Monday and attacked two people with a chainsaw. The motive of the attack is unknown. – REUTERS

British swimmer Adam Peaty broke the 50 meter breaststroke world record twice on Tuesday. Competing at the world championships in Budapest, the 22-year-old first clocked 26.10 seconds in the heats, breaking the world record of 26.42 seconds he set in 2015. He later won the semi-final in 25.95 seconds, becoming the first person to swim the 50 meter breaststroke in under 26 seconds. Peaty has now broken the 50 meter breaststroke world record four times. He also holds the world record for 100 meter breaststroke of 57.13 seconds, and is trying to become the first person to swim the distance in under 57 seconds. – BBC

A study has found a strong link between playing football at a high level and brain disease. The study analyzed the brains of 111 deceased NFL players and found that 110 of them had a degenerative brain disease called chronic traumatic encephalopathy (CTE). The disease can only be detected after death. The study analyzed the brains of 202 deceased footballers who had played at different levels and found that 88 percent of them had CTE. The study’s lead author, Ann McKee, says her research shows that footballers who play for longer and at a higher level than most are more likely to develop CTE. – NPR

The Russian government said that sanctions against the country approved by U.S. lawmakers would hurt bilateral relations, if they are implemented. "This is rather sad news from the point of view of Russia-U.S. ties," said a Kremlin spokesman. "We are talking about an extremely unfriendly act." The sanctions were approved by the House of Representatives in a 419-3 vote, but they still need to be ratified by the Senate and President Donald Trump. – REUTERS

Florida officials are investigating a video posted on social media that shows a speeding boat dragging a shark. The video shows three men laughing as the shark is being tossed violently by the speedboat’s wake. The Florida Fish and Wildlife Conservation Commission said it is trying to identify the men and where the incident took place. – ABC

Wildfires have prompted the evacuation of 10,000 residents and tourists in Southern Fr...