By Jana Choukeir BEIRUT, June 30 (Reuters) - Some 400,000 Lebanese uprooted by war have returned to southern Lebanon, with more expected to follow in the coming week, a government minister said on Tuesday, encouraged by a lull in the four-month-long conflict between Israel and Hezbollah. Yet many remain unable to go back. Since March, around 1 million people have been forced to flee their homes, and large numbers are still in shelters or temporary housing because their homes are destroyed or uninhabitable, said Hanine El Sayed.