With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Gladstone, who had left the Liberal leadership and retired from public life, was appalled by reports of atrocities in Bulgaria, and in August 1876, penned a hastily written pamphlet arguing that the Turks should be deprived of parts of Bulgaria because of what they had done there. He sent a copy to Disraeli, who called it "vindictive and ill-written ;... of all the Bulgarian horrors perhaps the greatest". Gladstone's pamphlet became an immense best-seller and rallied the Liberals to urge that the Ottoman Empire should no longer be a British ally. Disraeli wrote to Lord Salisbury on 3 September, "Had it not been for these unhappy 'atrocities', we should have settled a peace very honourable to England and satisfactory to Europe. Now we are obliged to work from a new point of departure, and dictate to Turkey, who has forfeited all sympathy." In spite of this, Disraeli's policy favoured Constantinople and the territorial integrity of its empire.
text_B: If the British government decides to annex Bulgaria from the Ottomans, are they following Gladwell's recommendation?
YES.