British officials raised the national terrorism threat to its second-highest level, meaning a terrorist attack is highly likely within the next six months. LONDON, May 1 (Reuters) - A 45-year-old man appeared in a London court on Friday charged with attempted murder over an attack during which two Jewish men were stabbed in Golders Green, north London, in what police are treating as a terrorist incident. In its wake, government officials raised the national terrorism threat to its second-