One year ago, Israeli soldier Gilad Shalit was snatched by gunmen who had tunneled across the border from Gaza to Israel. BBC journalist Alan Johnson was kidnapped in March. Both have now been heard from on the Internet. In an audio message posted today and verified by his father, Shalit says his health is deteriorating and that Israel has "a lack of interest" in his plight. In a video that appeared yesterday, Johnson says he's been strapped with explosives that will be detonated if Hamas carries out threats to free him by force. Conal Urquhart, Middle East correspondent for the Guardian newspaper, has the details.