"Seized the domain name" may be overstating it. .af is the country code top-level domain for Afghanistan (much as .tv is for Tuvalu). The Afghan government has control over who can use that cc-TLD & they've changed the rules.
Now, of course, it's the *%W# Taliban, so it's not like they are going to be in any way sympathetic to… anything… but it *is* their ccTLD.
Since you can actually buy a TLD now (new & kinda breaks the hierarchical nature of the DNS…), just buy .asfuck.