I usually don’t like to attack Ukraine, so my answer is “no” anyway.
Further, if one is attacking Ukraine and another territory, then Ukraine can be attacked without air units, while the air units can be used against WR or Belo. So the AA makes no difference to the attack then.
Finally, it just struck me yesterday that strafing Ukraine is a bad move. Strafing means that you are not intending to kill the Ftr, which means that you are taking hits from a Ftr for no reason. You could strafe WR instead which has the same units as Ukraine except for that pesky fighter which has a 2/3 chance each turn you strafe of killing a unit. So you have the opportunity to kill the same # of German units without getting shot at by a Ftr. Belo will do even less damage to a strafing attacker.
My R1 now is generally to take WR in force. A strafe of Belo in addition might make sense, giving Ger less fodder for the counterattack on WR on G1. But I’d rather save my Inf and add them to WR, where they will defend on a 2, rather than attacking with them at 1.