Risk Official Rules: Defender Dice and Re-roll Guide
No, the advantage of re-rolling dice via a RISK card cannot be used when you are defending a territory.
Category Strategy Games
Risk Dice Rules: Attacker vs Defender Official Rules
Ties go to the defender. The attacker loses an army if their die is equal to or lower than the defender's die.
Risk Dice Tie Rules: Official Risk Board Game Rules
Yes, in the event of a tie between the attacker's and defender's dice, the defender always wins the roll.
Risk Elimination Rules: Official Rules for Player Removal
Yes, you receive all cards in the possession of the opponent you have just eliminated.
Risk Official Rules: How to Roll Three Dice Correctly
Yes, you can roll three dice if you have at least four armies on the territory from which you are attacking.