Please answer YES or NO. (and provide brief reasoning, but give a yeso answer)

As you know, DES is insecure because of its short key length (56 bits). Suppose we propose an improvement called DESX which has key length 120 bits, seen as a pair K- (k1, k2), where k1 is 56 bits and k2 is 64 bits. The encryption of a one-block message m is DESX(K, m) k2 DES(k1, m). Does this cipher achieves the desired 120-bit of security strength? As you know, DES is insecure because of its short key length (56 bits). Suppose we propose an improvement called DESX which has key length 120 bits, seen as a pair K- (k1, k2), where k1 is 56 bits and k2 is 64 bits. The encryption of a one-block message m is DESX(K, m) k2 DES(k1, m). Does this cipher achieves the desired 120-bit of security strength