GHK Consulting Ltd. is buying Mostra SA.

Brussels-based Mostra is a communications firm that provides multichannel communications services to government and commercial clients to reach out to their stakeholders and customers.  The firm has annual revenues of about $40 million. The company’s clients include the European Commission, the European Parliament and the counsel of the EU. Terms of the transaction were not disclosed.

GHK, headquartered in Fairfax, Va., provides public policy, international development and logistics consulting services to government and commercial clients. The company is a subsidiary of ICF International, which also provides consulting services.

ICF expects the deal to provide it with additional services that can leverage the buyer’s advisory services.