Hablamos de la cuestión.

Spanish often leaves out subject pronouns when the verb already shows who is doing the action.

• hablamos = we speak / we are speaking / we spoke depending on context
• so nosotros is not necessary

You could say Nosotros hablamos de la cuestión, but that usually adds emphasis, contrast, or clarity.

For example:

• Hablamos de la cuestión. = neutral
• Nosotros hablamos de la cuestión. = We talked about the issue, not someone else

Because the verb hablar normally uses de when it means to talk about something.

• hablar de algo = to talk about something

So:

• Hablamos de la cuestión. = We talk/talked about the issue

Without de, hablar does not work that way in standard Spanish.

Compare:

• Hablamos de política. = We talk about politics.
• Hablaron del problema. = They talked about the problem.

Hablamos can be two different forms:

1. present indicative: we talk / we are talking
2. preterite: we talked

So by itself, Hablamos de la cuestión can be ambiguous.

Context normally makes it clear:

• If you are describing what usually happens or what is happening now, it is present.
• If you are telling a completed past event, it is preterite.

For example:

• Cada semana hablamos de la cuestión. = Every week we talk about the issue.
• Ayer hablamos de la cuestión. = Yesterday we talked about the issue.

Spanish often uses the definite article more than English does.

Here, la cuestión means the issue / the matter / the question. It suggests a specific issue that both speaker and listener know about.

If you removed the article and said Hablamos de cuestión, that would sound wrong in normal Spanish.

So:

• la cuestión = the issue / the matter

Cuestión is a flexible word. Depending on context, it can mean:

• issue
• matter
• question
• sometimes problem

In this sentence, it often sounds a bit formal or abstract, like the matter or the issue.

It is not always the same as an actual spoken question. For an everyday literal question, Spanish often uses pregunta.

Compare:

• Tengo una pregunta. = I have a question.
• La cuestión es complicada. = The issue/matter is complicated.

Yes, you could. Hablar sobre also means to talk about.

However, hablar de is usually the most common and natural choice.

Very roughly:

• hablar de = talk about
• hablar sobre = talk about / speak on / discuss, sometimes slightly more formal or more like addressing a topic

So:

• Hablamos de la cuestión. = very normal
• Hablamos sobre la cuestión. = also correct, sometimes a bit more formal or topic-focused

In Spain, a common pronunciation is roughly:

• kwes-TYON

A few details:

• cue- sounds like kwe
• the stress falls on the last syllable: -tión
• in much of Spain, the c before i or e is pronounced like the th in think

So in central/northern Spain, cuestión is approximately:

• kwes-THYON

In Latin America and some parts of Spain, it is more like:

• kwes-SYON

The accent mark shows where the stress goes.

• cuestión is stressed on the last syllable: -tión

Without the accent mark, Spanish spelling rules would suggest a different stress pattern, so the written accent is needed.

It also helps you distinguish the correct pronunciation immediately.

Not always. It depends on what comes after it and what you mean.

Common patterns include:

• hablar de algo = to talk about something
• hablar con alguien = to talk with someone
• hablar a alguien = to speak to someone
• hablar en español = to speak in Spanish

So in your sentence, de is there specifically because the meaning is to talk about.

Yes, it is correct and natural. It sounds fairly neutral, though la cuestión can feel a bit formal depending on context.

In more everyday speech, people might also say:

• Hablamos del tema. = We talked about the topic.
• Hablamos del asunto. = We talked about the matter.
• Hablamos del problema. = We talked about the problem.

But Hablamos de la cuestión is absolutely good Spanish.