Cryptic across

5 Realities of the Twelve Tribes? (9)

8 Gravity, in the main, falls over a long time (4)

9 Revelationary location? Take a chance with area after country’s southern border’s gone (8)

10 Exodus folk military intelligence cloak in a retro twill (7)

12 Exercises regularly during return, ready for posting to 3 (5)

14 Meander getting back, losing heading (5)

15 Woman with spear impaled by English relative of Banquo (7)