So if the egyptians destroys a smuggling tunnel to Gaza or arrest smugglers on Egypt it's a YES?

@0482 I would say NO, as this could happen outside of a war situation.

What does "direct participation" mean?

@toms when they carry out acts, which aim to support one party to the conflict by directly causing harm to another party, either directly inflicting death, injury or destruction, or by directly harming the enemy's military operations or capacity.