commit depredations on them, and then retreat to the interior before a sufficient force can be concentrated to pursue him. Such would probably be the harassing character of a mere defensive war on our part. If our forces when attacked, or threatened with attack, be permitted to cross the line, drive back the enemy, and conquer him, this would be again to invade the enemy's country after having lost all the advantages of the conquests we have already made by having voluntarily abandoned them. To hold such a line successfully and in security it is far from being certain that it would not require as large an army as would be necessary to hold all the conquests we have already made and to continue the prosecution of the war in the heart of the enemy's country. It is also far from being certain that the expenses of the war would be diminished by such a policy. I am persuaded that the best means of vindicating the national honor and interest and of bringing the war to an honorable close will be to prosecute it with increased energy and power in the vital parts of the enemy's country. In my annual message to Congress of December last I declared that-- The war has not been waged with a view to conquest, but, having been commenced by Mexico, it has been carried into the enemy's country and will be vigorously prosecuted there with a view to obtain an honorable peace, and thereby secure ample indemnity for the expenses of the war, as well as to our much-injured citizens, who hold large pecuniary demands against Mexico. Such, in my judgment, continues to be our true policy; indeed, the only policy which will probably secure a permanent peace. It has never been contemplated by me, as an object of the war, to make a permanent conquest of the Republic of Mexico or to annihilate her separate existence as an independent nation. On the contrary, it has ever been my desire that she should maintain her nationality, and under a good government adapted to her condition be a free, independent, and prosperous Republic. The United States were the first among the nations to recognize her independence, and have always desired to be on terms of amity and good neighborhood with her. This she would not suffer. By her own conduct we have been compelled to engage in the present war. In its prosecution we seek not her overthrow as a nation, but in vindicating our national honor we seek to obtain redress for the wrongs she has done us and indemnity for our just demands against her. We demand an honorable peace, and that peace must bring with it indemnity for the past and security for the future. Hitherto Mexico has refused all accommodation by which such a peace could be obtained. Whilst our armies have advanced from victory to victory from the commencement of the war, it has always been with the olive branch of peace in their hands, and it has been in the power of Mexico at every step to arrest hostilities by accepting it.