The phrase "a successful counter" is correct and usable in written English.
It can be used in contexts where you are referring to a countermeasure or response that effectively addresses a challenge or opposition.
Example: "The team's strategy proved to be a successful counter to the competitor's aggressive marketing tactics."
Alternatives: "an effective response" or "a winning countermeasure".
Then he would have had a successful counter to any play by the declarer.
Nevertheless, the South scored a notable early military triumph: at the First Battle of Bull Run, the turning point came when the Confederates, who seemed near the brink of defeat, managed to use the local Manassas Gap railroad to quickly bring in reinforcements from the northwest and launch a successful counter attack.
His Popular Force militia was regarded by US officials in central Vietnam as a successful counter to the communists.
Deflecting an asteroid would require months, if not years, of advance notice in order to mount a successful counter mission.
Neither the Syrian nor the Iraqi armies have been able to launch a successful counter-attack.
The Americans know they face an uphill battle to secure even the first requirement of a successful counter-insurgency campaign: a legitimate government.
Some 132 senior officers have recently been sacked by Mr Abadi, but there is as yet no sign of the army being able to make a successful counter-attack against Isis.
He received a report from his son, who lives in Tegucigalpa: the Honduran border police had said there was a successful counter-narcotics operation in the department of Gracias a Dios.
The military presented the attacks as the by-product of a successful counter-insurgency campaign, claiming that they were "a result of successful strikes from armed forces and police on the terrorists in the last period".
As a former member of the special forces, who took part in a successful counter-insurgency campaign in Borneo in the 1960s, Lord Ashdown should have little difficulty in straight-talking with military commanders.Mr Karzai has often complained that he gets too much contradictory advice from his Western backers.
Under-secretary of defence for policy Michèle Flournoy says a successful counter-insurgency strategy involves: Leveraging the coercive... force to establish a safe and secure environment … establish political, legal, social and … economic institutions; and help transition responsibility to a legitimate civil authority operating under the rule of law... toward long-term developmental activities.
