And for nearly four years, Iraq has blocked the return of United Nations weapons inspectors.
This week General Musharraf defied Pakistan's Supreme Court and blocked the return of his longtime political rival, Nawaz Sharif, and then arrested nearly the entire top leadership of Mr. Sharif's party.
One defendant, Essam Abdel Tawwab Abdel Alim, described how Islamic Jihad trained recruits in Yemen, which became a base after 1990, when Egypt blocked the return of mujahadeen who had fought the Soviets in Afghanistan, realizing that they had not abandoned their goal of attacking the Egyptian government.
The narrow victory by Mr. Dzurinda and his pro-Western allies blocked the return to power of the former prime minister, Vladimir Meciar, who has been accused of being undemocratic.
Barricades were set up, but only to block the return of the military and security forces.
That allowed the company's management and its controlling shareholder, Opportunity, to block the return of Telecom Italia on regulatory grounds.
The relatives had no business blocking the return of the boy to his father simply because they equated paternal custody with delivering him to Fidel Castro.
Elements of the Indonesian military continue to create mischief -- for example, by backing militias that harass East Timor and block the return of refugees.
Australia will block the return of dual citizens suspected of terrorism, based on security advice, and deport court-convicted terrorists under new national security laws.
Yet environmentalists are already planning demonstrations to block the return of the stuff, and Social Democratic-ruled Länder (states) shun storing it.
In the interim, Gov. Pedro J. Rossello of Puerto Rico said the Navy could resume training with inert, or nonexploding, bombs, a concession that was immediately criticized by those who vowed to block the return of the Navy.
