The informal truce they have with England appears to prevent them from doing this.

Islamic Jihad rejected an informal truce that other armed Palestinian factions agreed to a year ago.

They are very discreet, and since the last trouble, a few years ago, we've had a sort of informal truce with them.

Until Friday, an informal truce had appeared to be holding.

Once again, an informal truce that brought a lull in the fighting in the morning was brief.

On July 4, the armies observed an informal truce and collected their dead and wounded.

An informal truce declared by the two sides on May 15 appears largely to be holding.

My group welcomes the informal truce reached at lunchtime today.

Yugoslav Army units moved between the two sides and established an informal truce in the afternoon, more than eight hours after the fighting broke out.

As Lincoln assumed office an informal, uneasy truce had lasted for several months.