David Trimble kept his vow to resign as first minister of the Northern Ireland Assembly July 1 if the IRA didn’t begin disarming, casting doubt on the future of the power sharing accord. A political crisis looms, and what effect it will have on current tensions between the Catholic and Protestant communities remains to be seen. Meanwhile, the most contentious Protestant parades are scheduled for July 8 in Portadown and July 12 in Derry. Avoid these and other marches.