No, because he may be also my enemy but postpone the fighting

You have asked the same question as my colleague @Aristidis. Follow the link attached. There are many good responses. You have given two answers there by inmail, as dear @Aristidis mentioned in the thread. There is no need for same new question my dear friend. Just, post answers directly, not by messages to the author of the thread.

https://www.researchgate.net/post/Do_you_agree_with_the_statement_The_enemy_of_my_enemy_is_my_friend2

Dear Colleagues,

Good Day,

"The enemy of my enemy is my friend

The enemy of my enemy is my friend is an ancient proverb which suggests that two opposing parties can or should work together against a common enemy. The earliest known expression of this concept is found in a Sanskrit treatise on statecraft dating to around the 4th century BC, while the first recorded use of the current English version came in 1884.

The proverb is sometimes phrased as "the enemy of mine enemy is my friend" or "my enemy's enemy is my friend.

......

Cold War

The doctrine was also used extensively during the Cold War between Western Bloc nations and the Soviet Union. The Soviets and the Chinese aided North Korea during the Korean War as well as the Viet Cong/North Vietnamese during the Vietnam War to oppose American foreign policy goals. Likewise, the United States and its allies supported the Afghan Mujahideen after the Soviet invasion in the hopes of thwarting the spread of Communism. In the Third World, both superpowers supported regimes whose values were at odds with the ideals espoused by their governments. These ideals were capitalism and democracy in the case of the United States[citation needed], and the Marxist–Leninist interpretation of Communism in the case of the Soviet Union. In order to oppose the spread of Communism, the United States government supported undemocratic regimes, such as Mobutu Sese Seko in Zaire and Augusto Pinochet in Chile.

The support provided by the Soviet Union towards nations with overtly anti-Communist governments, such as Gamal Abdul Nasser in Egypt, in order to oppose American influence, is another example of "the enemy of my enemy is my friend" as policy on an international scale. The Soviets also backed India to counter both the pro-American Pakistani government and the People's Republic of China (following the Sino-Soviet split), despite the fact that India had a democratic government.[citation needed] Similarly, China, following the split, lent support to nations and factions that embraced an anti-Soviet, often Maoist form of Communism, but whose governments nonetheless embraced Sinophobic policies at home, such as the Khmer Rouge."....

Please, see the reference for more detail.....

https://en.wikipedia.org/wiki/The_enemy_of_my_enemy_is_my_friend

It is … a proverb with a dismal history in practice. In case after case, the “enemy of my enemy” has actually proven to have been an enemy at the time or turned into one in the future. The Mongols did not save Europe from the Turks, and the Soviet Union was scarcely an ally after the end of World War II.

But the Enemy of My Enemy Is Not Always My Friend

https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=13&cad=rja&uact=8&ved=0ahUKEwjjwrDrxqrQAhWIP48KHcAFCRMQFghfMAw&url=http%3A%2F%2Ftheresurgent.com%2Fthe-enemy-of-my-enemy-is-not-always-my-friend%2F&usg=AFQjCNHJzo4LKH6vsNTMsBKgTHa3m4xlIQ

Dear Prof Kabir Khan ,

Morality based on its purview is meant for having friends who have the same ideologies and principles. It is not an absolute measure to have enemies . I would have enemies (personally) but when it comes organizational or bigger arena enemies are who confront us with other parameters. Unfortunately , politically the saying is just !!!

Dear NUM Akramul Kabir Khan

Thank you for inviting me to participate in this forum discussion and argumentation.

My direct answer to the question of  "The enemy of my enemy is my friend". DO NOT

In social relations and human communication, there are many variables that can modify the content of a message; For example noise or environmental disruptors. I give some examples of types of relationship of friendship, enmity and not friendship but not enmity. In the examples, A = Friend; B = Enemy; C = Unknown; D = Known Friend and not Enemy

regards

Dr. José Luis García Vigil

Estimado NUM Akramul Kabir Khan

Gracias por invitarme a participar en este foro de discusión y argumentación.

Mi respuesta directa a la cuestión de ¿El enemigo de mi enemigo es mi amigo?. NO

En las relaciones sociales y en la comunicación humana, existen muchas variables que pueden modificar el contenido de un mensaje; por ejemplo ruido o disruptores del ambiente. Pongo algunos ejemplos de tipos de relación de amistad, enemistad y no amistad pero tampoco enemistad. En los ejemplos, A = Amigo; B = Enemigo; C = Desconocido; D = Conocido no Amigo y no Enemigo

Saludos

Dr. José Luis García Vigil 

Not agree! About

''The enemy of my enemy is my friend.''

Such combination is an opportunistic combination, in which both parties are not believing in good friendship.

in the general form is not true

,because

for example

(Counterexample)

US is the enemy of taliban and daesh (isis)

^

IR_IRAN is the enemy of taliban and daesh (isis)

so

we can not say

US and IR_IRAN are not friends,as you know.

It is not always true.

You must not fight too often with one enemy, or you will teach him all your art of war. Napoleon Bonaparte

following

Correct argument

No, because he may be also my enemy but postpone the fighting

Not always

No