The latest round of fighting began after Washington hit Iranian targets on Sunday, the first known strikes in several weeks. Iran launched a wave of attacks on US sites across the Middle East on Wednesday as violence surged after an extensive American bombardment and the deaths of four people at an Iranian wedding party. Key points and original sources are listed below.

• The latest round of fighting began after Washington hit Iranian targets on Sunday, the first known strikes in several weeks.S1

• Iran launched a wave of attacks on US sites across the Middle East on Wednesday as violence surged after an extensive American bombardment and the deaths of four people at an Iranian wedding party. Iran's Revolutionary Guards announced attacks on US bases in J...S2