Three American service members have been killed and casualties are reported in the UAE, Israel and Kuwait as Israel and Iran continue to trade strikes.

Israel says its attacks were in response to strikes from Hezbollah. In Kuwait, video shows the moment one fighter jet comes down - while in Saudi Arabia, an oil refinery was attacked by drones.

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Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...