rivendicare bedeutet auf Englisch

assert [asserted, asserting, asserts]▼(To maintain; to defend)
verb
[UK: ə.ˈsɜːt] [US: ə.ˈsɝːt]

claim [claimed, claiming, claims]▼(to demand ownership of something)
verb
[UK: kleɪm] [US: ˈkleɪm]No group has claimed responsibility. = Nessun gruppo ha rivendicato la responsabilità.