1.   There have been periodic clashes between the system and imported lifestyles.

2.   Periodic clashes also have erupted between security forces and rioters in the streets of Bahrain, an important financial hub and base for the U.S. Navy in the region.

3.   Periodic clashes have continued with the MILF despite a cease-fire agreement last year.

4.   Periodic clashes recurred Tuesday.

5.   A truce signed last year ended large-scale hostilities, but there are still periodic clashes.

6.   Also contributing to tensions along the northern frontier are periodic clashes between Myanmar government forces and autonomy-seeking Shan rebels.

7.   Despite the peace accord, there are periodic clashes between the hard-line government and the mostly Islamic opposition.

8.   Despite the peace deal, there have been periodic clashes between the opposition and government forces.

9.   Despite a peace treaty between the hardline government of President Emomali Rakhmonov and the opposition last year, periodic clashes have continued.

10.   He has persistently refused, causing periodic clashes at assembly meetings.