Double Cross
Tank top? TURRET
Home of counterculture? LUNCHROOM
Capital of Lithuania? ELL
LOIWhat it lacks in puns, etc. it has in a clever grid and challenging entries. (ORMOLU and GTI, really?)
RATING:

Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = No fun