Someone Explain to Me Who is Blowing Up Stuff in Iran

This is a real question, so please point me in the direction of serious national security outlets and reporting.  Is it the US? Israel? Combined ops? Someone else? Is the US engaged in “real” covert ops, rather than simply obviously on-going but “unacknowledged” drone strikes? (I’d like to know the state of current respectable and serious reporting and commentary, not rants or conspiracy theories, thanks.)