Combine the broth, preserves, orange juice, lemon juice, zests, cinnamon and cloves in a saucepan and mix well. Bring to a boil over medium-high heat. Boil for 8 minutes or until mixture is reduced to 1 ½ cups. Stirring occasionally.
Whisk the port and cornstarch in a small bowl until blended.
Whisk the port/cornstarch mixture, orange marmalade and chili sauce into the sauce mix in the sauce pan.
Bring to a simmer over medium heat, whisking constantly. Simmer for 5 minutes or until the flavors blend and the sauce is slightly thickened.
Season with red pepper flakes, salt and pepper. Serve warm or at room temperature.
For The Grilled Chicken
Combine the wood chips with enough water to cover in a bowl. Let stand for one hour and then drain.
Preheat grill on medium high heat. Place wood chips in a foil packet and don't seal the top.
Place the packet under gas grill grates or on the coals (if using a charcoal grill) five minutes before grilling process begins and cover the grill.
Drain the chicken, discard marinade. Grill chicken for 10 minutes. Turn chicken over and grill another 10 minutes. Turn the chicken again this time basting a few times and cook for 5 minutes. Turn chicken again and cook another 5 minutes, basting with the cherry bbq sauce. Chicken should be grilled through and an instant read meat thermometer should read 165 degrees.