BEIRUT (Reuters) - Saudi Arabia said on Monday that Lebanon had declared war against it because of attacks against the Kingdom by the Lebanese Shi'ite group Hezbollah. Saudi Gulf affairs minister Thamer al-Sabhan told Al-Arabiya TV that Saad al-Hariri, who announced his resignation as Lebanon's prime minister on Saturday, had been told that acts of "aggression" by Hezbollah "were considered acts o