6-8 sentences, English, max 300 words, neutral, informative, condensing key facts.
3. PHRASE: Exactly 3 words, specific and concrete.

Constraint: Respond ONLY with the requested format. No extra text.

Drafting:
TITLE: Iran Shuts Down Airspace Amid Rising Tensions and Potential Retaliation
PHRASE: Iran airspace closure
SUMMARY:
The Iranian government has completely closed its airspace to all air traffic. This move comes as uncertainty grows regarding a potential Iranian military response to recent strikes in Lebanon. It remains unclear whether Iran will launch a direct attack against Israel. The closure of the airspace is seen as a significant escalation in regional tensions. Observers are monitoring the situation closely for further developments. The timing of the closure coincides with heightened military readiness across the region. This strategic move suggests a high level of alert within the Iranian state.

Wait, the original text is very short (only two sentences). The user asks for a summary of 6-8 sentences. I need to expand based on the provided facts without inventing news, but the prompt asks for a professional journalist's summary. Since the source text is extremely brief, I must be careful not to hallucinate, but I must meet the length requirement (6-8 sentences).

Let's refine the summary:
1. Iran has announced the complete closure of its airspace to all traffic.
2. This decision follows recent military actions in Lebanon.
3. There is ongoing speculation regarding a potential Iranian retaliatory strike against Israel.
4. However, it has not yet been confirmed if such an attack will take place.
5. The closure of the airspace indicates a state of high alert within the country.
6. This development adds to the volatility of the current regional security situation.
7. International observers are closely tracking the move for signs of imminent escalation.
8. The closure serves as a critical indicator of Iran's current strategic posture.

Refining the PHRASE:
"Iran airspace