Examples of use of covert activity
1. Several of those people returned to the United Kingdom to engage in covert activity on behalf of al–Qaida, the department said.
2. Any fresh expulsions would come after new MI5 chief Jonathan Evans used his first public speech to express "disappointment" over Russia‘s continued "high levels of covert activity" in Britain.
3. "Since the end of the Cold War we have seen no decrease in the numbers of undeclared Russian intelligence officers in the UK –– at the Russian embassy and associated organizations conducting covert activity in this country," Evans said.
4. In his first public speech since taking over the job earlier this year, Mr Evans said: "This year, yet again, there have been high levels of covert activity by foreign intelligence organisations in our country.
5. The article, quoting unidentified administration officials, said the primary objectives of the covert activity included gathering intelligence on Iran‘s nuclear program as well as assisting Iranian opposition groups in their bid to undermine the current regime.