Take sides

From Fresh Dictionary

English

Verb

take sides

1. ((idiomatic{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) To ally oneself with a given opinion, agenda or group; to support one side or viewpoint in a competition or confrontation.

   I am not going to argue with you, and I am not going to take sides in this discussion.