This veiled threat will not be taken seriously by anyone. Every serious party in the Middle East can see that Hamas is insignificant so they'll press all the PR buttons they have to look as a major player. They can't even use their speciality: murdering inocent people to look important. The truth of their doom is gradually sinking in for these clowns.
US rally shows support for ex-Marine held by Iran on spying charges (AP)
from the article: Meshal: Upcoming Middle East conference is doomed to fail