Q&A: Gibraltar row

Spain disputes UK sovereignty over Gibraltar

The UK government says it is considering legal action against Spain over the imposition of additional border checks in Gibraltar. What is the latest dispute about?

What and where is Gibraltar?

Why is Gibraltar back in the news?

How did Spain react?

What new measures is Spain considering?

Why is the UK threatening legal action?

Visitors to Gibraltar have found themselves in six-hour queues in the sweltering summer heat

Why is Spain doing this?

Is fishing the only issue vexing Spain right now?

How long-running is the dispute over Gibraltar?

And more recently?

How serious is this latest row?

What do the people of Gibraltar say?