of concern to or concerning the affairs of other nations (other than your own)

of concern to or concerning the affairs of other nations (other than your own)

of concern to or concerning the affairs of other nations (other than your own)

of concern to or concerning the affairs of other nations (other than your own)

the branch of engineering science concerned with the design and construction of aircraft

an engineer concerned with the design and construction of aircraft

of or relating to electronics; concerned with or using devices that operate on principles governing the behavior of electrons

of or relating to electronics; concerned with or using devices that operate on principles governing the behavior of electrons

the branch of engineering science concerned with the design and construction of aircraft

the branch of engineering science concerned with the design and construction of aircraft