take a stand on (something)
To hold, assume, or express a very strong or adamant position on some issue. It's time for Congress to finally take a stand on this issue! My father was always so wishy-washy, never taking a stand on anything important to him.
take a (firm) stand on something
to express and maintain a strong opinion of something. I hope you take a firm stand on the need for more office security. Yes, I will take a stand on it.